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The winter skin guide“Why Is My Skin So Dry the Minute the Heating Comes On?” The Honest Answer, and the Moisturizer for Dry Skin That Actually Keeps Up

What heated indoor air does to your skin overnight, why a light lotion struggles to keep pace, and the rich tallow cream that thousands of verified buyers now use from face to heels (without the greasy film or the beefy smell they expected)

Digital thermostat set to 72 degrees on heat next to a hygrometer showing 24% humidity in a cozy living room on a snowy winter evening Woman in a cream knit sweater smoothing Sky & Sol The Everything Cream onto her cheek by a frosty window, holding the tube

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Every year it happens in the same order. The first cold night arrives, someone nudges the thermostat up, and within a few days your skin feels tight after every shower, your hands look chalky by lunchtime, and the moisturizer that behaved perfectly all summer seems to vanish into your face without a trace.

If you have been typing “why is my skin so dry” into a search bar lately, you are in good company. Dry skin is one of the most common complaints of the colder months, and the reason it gets worse indoors has less to do with your skin letting you down and more to do with the air your heating quietly creates around you.

Most people notice it in small ways first: foundation that clings to dry patches, knuckles that sting when you make a fist, a face that feels comfortable at 7 a.m. and tight again by 10. You apply more, it helps for an hour, and then the whole cycle starts over.

We make a tallow-based cream, so we clearly have a stake in this topic. The science behind winter dryness is worth understanding whatever you end up using, though, so here it is in plain language, followed by what we recommend and why.

The Lotions That Stopped Keeping Up

If your skin gets dry every winter, you have probably already worked through the usual fixes:

  • A thicker drugstore lotion for dry skin, which feels comfortable at first until the tightness creeps back by midday
  • Pricier serums and facial oils, which have a lovely texture but make little difference to how dry your skin feels by evening
  • Heavy balms and petroleum jelly, which work on heels but leave a shine few people want on their face every day

The result: a bathroom shelf full of products and very little lasting comfort.

None of these products is bad. Most were simply never designed for air this dry, which is why so many of our reviews begin with some version of “I’ve tried everything.”

In most cases the problem is not your skin type or the products themselves, but the air in the rooms where you spend your evenings and nights.

The 20% Humidity Problem

Cold outdoor air holds very little water, and once your heating warms it, the relative humidity indoors drops even further. In a controlled study, skin started to feel dry once humidity fell below 30% (Sunwoo et al., J Physiol Anthropol 2006), and plenty of heated homes sit well below that all winter. One thread in a large online skincare community put it this way:

“My house is 20% on a good day in the winter. I wonder why my cats are so staticy and my knuckles bleed even with a Humidifier.” (Reddit, r/SkincareAddiction)

Another reply summed up how many of us feel by February:

“20% is brutal. That’s basically desert level air in your own place. No amount of moisturizer can keep up with that.”

That last reply is only half right, and the part it gets wrong is the useful part.

Researchers have measured what this kind of air does to skin, and their findings explain why winter dryness feels so relentless:

  • After a few hours in low-humidity air, the water content of the skin’s outer layer fell and surface roughness increased (Egawa et al., Skin Res Technol 2002)
  • Sleeping in a room below 30% humidity cut skin hydration by about 24% by morning (Jang et al., Skin Res Technol 2019)
  • A light, mostly water lotion gives skin a quick drink, but that comfort fades fast when the air around you is this dry
  • Hot showers and frequent handwashing, which both tend to increase in winter, add to the dryness

So the answer isn’t to give up on moisturizer. It is to use one rich enough to hold its ground in dry air, at the moments that matter most, and that is where tallow comes in.

A man and a woman each smoothing The Everything Cream onto their cheeks

A Simple 4-Step Winter Routine for Dry Skin

1Moisturize damp skin: after washing your face or stepping out of a warm (not hot) shower, pat your skin until it is just damp and moisturize within a few minutes, while there is still water on the surface to seal in.

2Go richer than you would in summer: warm a pea-sized amount of The Everything Cream between your fingertips until it softens, then press it into your face and neck. A little goes a long way.

3Give hands, elbows and heels their own attention: these areas take the brunt of winter, so apply a slightly thicker layer at night and keep a tube by the sink for a touch after each wash.

4Put some moisture back into the air: if your home reads below 30% humidity, running a humidifier in the bedroom is a simple, inexpensive way to make nights less drying for your skin.

Most of our reviewers describe noticing the difference in how their skin feels first, often within the first few days, and long before anything else changes. Individual results vary, but the routine costs you nothing to try tonight.

Hand holding a tube of Sky & Sol The Everything Cream outdoors in front of green hills

Why This Moisturizer for Dry Skin Holds Up When the Air Turns Dry

Once you know what dry air is doing, the case for a richer cream becomes simple. Dermatology reviews describe richer, more occlusive moisturizers as particularly useful when humidity drops (Purnamawati et al., Clin Med Res 2017), and The Everything Cream is built around that idea, with nothing added to pad the label.

What’s inside, and what each ingredient does for you:

  • Wooden bowl of soft white grass-fed tallow

    Grass-fed tallow

    Soft skin that stays comfortable

    Mostly oleic, palmitic and stearic acids, the same kinds of fatty acids found in your skin, so it melts in instead of sitting on top.

  • Wooden bowl of creamy yellow mango butter

    Mango butter

    Smoother, softer dry patches

    A creamy plant butter that adds richness, so rough spots on hands, elbows and heels feel supple again.

  • Wooden bowl of golden beeswax pieces

    Beeswax

    Moisture that stays put longer

    Gives the cream its body and leaves a light, breathable layer that helps hold moisture in when the air is dry.

  • Wooden bowl of glossy golden jojoba oil

    Cold-pressed jojoba oil

    A silky, never-heavy finish

    A light liquid wax that helps the cream glide on and absorb smoothly, without a greasy film.

  • Pile of raw amber propolis

    Propolis

    A time-honored skincare ingredient

    Collected by bees from tree resins and used in skincare for generations. Patch-test first if you react to bee products.

  • Wooden bowl of smooth cream-colored colostrum

    Colostrum

    Rounds out the formula

    A nutrient-rich first milk that rounds out the recipe. Note: it is dairy-derived.

What you won’t find matters just as much: no silicones, no synthetic fragrance, and no added parabens, phthalates or PFAS. It is one cream made to work from face to heels, not a body lotion with a face label on it.

Why Most Lotions for Dry Skin Fall Short in Winter

Light, water-based lotions feel refreshing and absorb quickly, which is exactly their weakness in winter: in very dry air the comfort fades fast, and you are reapplying before lunch.

Heavy ointments and petroleum jelly are excellent at staying put, and they have a real place on cracked heels. Most people won’t wear that level of shine on their face every day, though, so they end up using them only on the worst spots.

Many tallow balms get the richness right and the experience wrong. The complaints we see most often in tallow reviews are a noticeable beefy smell, a greasy film that never quite absorbs, and a waxy texture that is hard to spread.

What is missing is a cream rich enough for heated air that still feels pleasant enough to use twice a day, on your face as well as your heels. That is the gap The Everything Cream was made to fill.

What Verified Buyers Say About Dry Winter Skin

These are word-for-word excerpts from verified-buyer reviews of The Everything Cream:

“In this cold raw winter my face is soft, hydrated and smooth with no dry patches.” Nancy B., verified buyer

“I was hesitant to buy tallow cream because I wasn’t sure of the smell or feel. I am happy to report there is no smell and the texture [is] perfect and not greasy.” Lisa L., verified buyer

“Very happy with the Everything Cream. It’s nice and light and nourishing to my sensitive skin.” Dana S., verified buyer

The pattern repeats across thousands of reviews: people arrive with dry skin and are surprised by how light a tallow cream can feel. Many now use it as their face moisturizer for dry skin and their hand cream, straight from the same tube.

What Waiting for Spring Really Costs

It is tempting to put up with dry skin until the weather turns. But winter indoors lasts a long time, and every week of it adds up:

  • Makeup that catches on flaky patches and never quite sits right
  • Hands that sting after every wash and knuckles that crack in the cold
  • Tight, itchy skin that makes it harder to settle down at night
  • Money spent on yet another lotion that feels nice for about an hour

None of this is dramatic, which is exactly why it drags on for months. Dry skin rarely sorts itself out while the heating is running, so the sooner your routine matches the air you are living in, the sooner your skin feels comfortable again.

How The Everything Cream Compares to the Usual Fixes

  • Versus light lotions: richer, so it is made to hold up in dry air, yet it absorbs instead of leaving a film. A pea-sized amount covers your whole face.

  • Versus heavy balms and petroleum jelly: the staying power you want for heels and elbows, in a texture soft enough for your face and light enough to wear under makeup.

  • Versus other tallow creams: no added synthetic fragrance and no beefy smell, a finish buyers describe again and again as “not greasy,” and a 180-day money-back guarantee behind every tube.

The 180-Day Guarantee That Takes the Risk Off You

Sky & Sol 180 days money back guarantee seal

Sky & Sol backs The Everything Cream with a 180-day, 100% satisfaction guarantee. That is long enough to test it through an entire winter rather than judging it on the first week.

If it doesn’t live up to your expectations, email support@skyandsol.co within 180 days of purchase. You can send it back even if it has been used, the return shipping label is covered, and you receive a full refund, including your original shipping.

Put simply, we only keep your money if the cream earns its place on your bathroom shelf.

Three Questions People Ask Before Their First Tube

Will it smell like beef? It is the most common worry, and reviewers consistently say it doesn’t. The tallow is purified before it goes into the cream and there is no added synthetic fragrance, so most people who mention scent say they can’t smell anything at all, or at most a faint, natural note.

Will it clog my pores? Everyone’s skin is different, and no rich cream suits every face. If you are acne-prone, start with a thin layer at night. If your skin is very reactive or you are sensitive to bee products (the formula contains propolis and beeswax), patch-test on your inner arm first. If it isn’t right for you, the guarantee has you covered.

How long does one tube last? Each 3 oz (85 g) tube holds around 75 face applications, which works out to under 50 cents per use. If you plan to use it head to toe, Subscribe & Save or the 500 g refill bag makes far more sense than single tubes. Order directly from skyandsol.co so the guarantee and our support team stand behind every tube.

Before You Order: How to Get the Best Value

The Everything Cream is $34.99 for a 3 oz tube, and there are a few simple ways to make every tube go further, depending on how much of your body you plan to use it on.

Every option below is available in the order box on this page:

  • Subscribe & Save: 10% off every delivery ($31.49 a tube), plus a free gift on your 2nd delivery. Skip, pause or cancel anytime.
  • Stock Up: save 10% on 3 tubes, 15% on 4 and 20% on 5
  • Free standard US shipping on orders of $47 or more, delivered in 3-5 business days
  • The 180-day money-back guarantee, even if the tube is used

A single tube is $34.99. Orders under $47 ship for about $12.95, so a 3-tube order is usually the better value.

Get The Everything Cream

Your Skin Can Feel Different This Winter

You may be skeptical, and that is fair. You have probably bought more than one moisturizer for dry skin that promised all-day comfort and delivered about an hour of it.

So picture a different kind of winter morning.

What if your makeup went on smoothly instead of catching on dry patches? What if your hands stopped stinging after you washed them, and your heels felt soft enough to walk barefoot around the house? What if one tube by the sink took care of all of it?

For $34.99, less than many single serums, you can find out, with 180 days to decide. If it doesn’t work for you, you get a full refund, so you keep the upside while we carry the risk.

Don’t wait for spring to feel comfortable in your own skin. The heating will be on for months, and your skin feels it every single night.

Most of us lose a whole season to dry skin, reaching for more product and getting a little less relief each time. This year you can start the season with a routine built for the air you actually live in.

Start Tonight

A month from now, you could be the one telling a friend what finally worked for your dry skin.

Or you could still be reapplying lotion at your desk and wondering why nothing lasts past lunch.

If you have been searching for the best moisturizer for dry skin, here is our honest advice: don’t judge any cream on its first five minutes. Judge it on how your skin feels at 10 p.m. in a heated house, and give The Everything Cream a fair try.

Get The Everything Cream

With care,
The Sky & Sol Skin Team

P.S. Not ready to change your whole routine? Start with the driest spot you have, whether that is your hands, your heels or the sides of your nose, and see how it feels by morning. Plenty of our reviewers started with “just my hands” and now use it everywhere.

P.P.S. Buying for the whole household? Partners and kids tend to borrow the tube (“My husband actually took mine and he won’t give it back!” Laura C., verified buyer), so the 3-tube bundle with free shipping is usually the smarter buy.

Real customers, real routines

Loved by thousands of verified buyers, from face to heels

  • Woman holding a tube of Sky & Sol The Everything Cream and smiling Sinks in, not greasy

    “Not greasy” comes up in 132 verified reviews

  • Woman outdoors holding The Everything Cream tube near her shoulder No beefy smell

    No added synthetic fragrance

  • Smiling woman showing the front of The Everything Cream tube Face to heels

    One 3 oz tube, around 75 face uses

  • Collage of women applying The Everything Cream to their faces Wears under makeup

    A thin layer sits smoothly under foundation

  • Smiling woman holding a tube of The Everything Cream next to her cheek Simple ingredients

    Tallow, mango butter, propolis, jojoba, colostrum and beeswax

4.8out of 5

Based on 2,208 reviews of The Everything Cream

Also rated 4.6 out of 5 from 815 ratings on Amazon

Photo shared by verified buyer Alice O. with their Sky & Sol Everything Cream

Alice O. Verified

02/07/2026

Everything Cream

I love this cream! This winter has been very cold and drying for my skin. Plus I teach Aquatic Fitness so add in the pool chemicals and it is a battle to keep skin protected. Everything Cream, I am so glad to have found you! I cut the tube to get the last bit!

The Everything Cream

Photo shared by verified buyer J. H. with their Sky & Sol Everything Cream

J. H. Verified

02/06/2026

I love the everything cream

The everything cream is really great. It moisturizes, absorbs wonderfully, and truly works 24 hours. Many other tallow based creams I have tried are heavy and stay greasy on top of your skin. This product blends right into your skin. No greasy feel. Just soft supple skin. I liked it so much, I ordered the big refill bag.

The Everything Cream

Photo shared by verified buyer Martie Y. with their Sky & Sol Everything Cream

Martie Y. Verified

12/15/2025

Awesome hydration for my mature skin!!

I absolutely love the Everything Cream! I changed over to clean and safe personal products over the past year. First, I began using an all tallow moisturizer in my face however it felt sticky all day. I had started using the Sky and Sol sunscreens and loved them so I decided to order the face moisturizer. It is wonderful!! It feels so good when putting it on and is not sticky but you can feel the hydration all day or night! I can’t wait to try more of the products.

The Everything Cream

Photo shared by verified buyer Jill H. with their Sky & Sol Everything Cream

Jill H. Verified

09/28/2026

Moisturize me!!!!

I absolutely love my natural restorative moisturizing cream. I’ve been using it as my all over moisturizer. I even use it on my lips. It’s very hydrating. It’s non-greasy. I use this everywhere. I go and I share it.

The Everything Cream

Photo shared by verified buyer Miki E. with their Sky & Sol Everything Cream

Miki E. Verified

03/03/2026

Deeply absorbing hydration

I have combination skin type and initially I thought it would be too oily but after using it, it’s actually soothing on the skin and I can feel it absorbing well. Within 5 min, I can my skin feels deeply moisturised. The goodness of the ingredients all work together so well! I highly recommend it!

The Everything Cream

Photo shared by verified buyer Karina with their Sky & Sol Everything Cream

Karina Verified

08/06/2025

Silky and nourishing

I struggle with perpetually dry skin, particularly on my face, and I love how moisturized my skin feels using this. It feels so nourishing and feels like it really lasts. This is my new go-to for moisturizing my face!

The Everything Cream

Photo shared by verified buyer Dana L. with their Sky & Sol Everything Cream

Dana L. Verified

03/19/2026

Day n night moisturizer (everything cream)

Love this moisturizer! I use it on my hands and at night on my face. Wake up in the morning and my face is soft and dewy..even after I wash it! I will be ordering more, and some sunscreen to go with it! There is no fragrance to this if you're worried about that. It is a little on the pricey side for 3oz, but you're getting great, natural, healthy ingredients.

The Everything Cream

Photo shared by verified buyer Robin with their Sky & Sol Everything Cream

Robin Verified

07/03/2025

Absorbs quickly yet lasts!

What an amazing formula! I’m impressed. Definitely ordering more. It even softened cracked dry heels.

The Everything Cream

Photo shared by verified buyer M.R. with their Sky & Sol Everything Cream

M.R. Verified

03/23/2025

New Go-To

I’m very impressed with the non-greasy lotion. It soaks in, moisturizes my hands, arms, or even my face. And my makeup doesn’t slide off when I use it on my face.

The Everything Cream

Photo shared by verified buyer Hayleigh C. with their Sky & Sol Everything Cream

Hayleigh C. Verified

07/09/2025

Great lightweight moisturizer

Super happy with the texture and weight of this moisturizer! I’ve been using it on my kids who have dry skin, and it’s not too sticky for them as opposed to other creams we have tried.

The Everything Cream

Photo shared by verified buyer Jodi M. with their Sky & Sol Everything Cream

Jodi M. Verified

02/17/2026

Big Bag of Everything Cream

I love this cream, I saved up to get the big bag and I am so happy I did. I can use it more often and not worry that it will soon be gone. Will get the big size again when I get low. :)

The Everything Cream

Photo shared by verified buyer Kris P. with their Sky & Sol Everything Cream

Kris P. Verified

09/15/2025

Great Cream

I bought this to use as a hand cream mostly. I love it! I'm very picky about the stuff I put on my skin. It was well absorbed and moisturized for hours. I'm a fan! Haven't used it on my face yet. Waiting for the colder winter months when my skin is drier. Looking forward to trying some other products!

The Everything Cream

Photo shared by verified buyer Dinah B. with their Sky & Sol Everything Cream

Dinah B. Verified

11/30/2025

10/10 amazing product!

Excellent results: a little bit goes a long way, I use it as a facial moisturizer and it works GREAT! I 100% recommend this product.

The Everything Cream

Photo shared by verified buyer Pamela with their Sky & Sol Everything Cream

Pamela Verified

10/15/2024

Mostly love

The smell is pleasant- it took me some getting used to, and now I crave smelling it after I wash my face oddly enough. It feels really really great on my skin. Knowing that there aren’t any harsh ingredients really helps ease my mind as well. I haven’t noticed any improvements in my skin per se, from previous face lotions that I’ve used, for fine lines specifically. It’s been a couple months. But the feel, the smell, and the ingredients are enough to win me over completely. And the moisture lasts all day.

The Everything Cream

Photo shared by verified buyer Ann Marie P. with their Sky & Sol Everything Cream

Ann Marie P. Verified

03/13/2024

Felt great on my skin

Was so surprised that I finally found a moisturizer that contained Tallow and also felt amazing on my skin!!!

The Everything Cream

Photo shared by verified buyer Amy P. with their Sky & Sol Everything Cream

Amy P. Verified

01/22/2026

Everything cream

I have never really loved putting on lotion daily because they always felt so stifling. Now I look forward to putting on my Everything Cream after I shower.

The Everything Cream

Photo shared by verified buyer PK with their Sky & Sol Everything Cream

PK Verified

11/04/2025

My day and night go-to

Just right. It’s my morning and evening facial moisturizer. It’s not too light and not too heavy. Just right! Packs nicely so I don’t have to bring multiple creams. I’ve bought two already and will buy more.

The Everything Cream

Photo shared by verified buyer Karly S. with their Sky & Sol Everything Cream

Karly S. Verified

07/23/2025

Great Product

This moisturizer absorbs quickly without leaving a heavy or oily feeling to my skin.

The Everything Cream

Photo shared by verified buyer Kwee with their Sky & Sol Everything Cream

Kwee Verified

10/12/2025

Amazing Product

I have used this product for over a year and am extremely happy with the results. The consistency is very smooth and non-greasy and it absorbs quickly. My skin has improved so much since using it.

The Everything Cream

Photo shared by verified buyer Diana with their Sky & Sol Everything Cream

Diana Verified

10/04/2025

Everything Cream

Received my first Everything Cream as a birthday gift. I use it on my face and neck, no greasy feeling, just soft moisturized skin. Great on my dry hands. It’s truly for everything!

The Everything Cream

All reviewers received compensation, regardless of whether their review was positive or negative. Some photos on this page show our previous packaging; the formula is the same. Individual results may vary.

The Everything Cream tube held up outdoors

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4.8 (2,208 reviews)

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Individual results may vary. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. The studies cited describe how dry air affects skin; they did not test tallow or The Everything Cream. Patch-test first if you have very sensitive skin or a bee-product sensitivity.

×

Sunwoo Y, Chou C, Takeshita J, Murakami M, Tochihara Y. Physiological and subjective responses to low relative humidity. J Physiol Anthropol. 2006;25(1):7-14.

Study

Controlled chamber experiment (RH 10%, 30%, 50% at 25 C); n=16 healthy young men; hours per condition.

Key findings

  • “Under 30% RH, the eyes and skin become dry.”
  • Humidity had no effect on sebaceous gland activity.

Abstract

In order to investigate the influence of low relative humidity, we measured saccharin clearance time (SCT), frequency of blinking, heart rate (HR), blood pressure, hydration state of skin, transepidermal water loss (TEWL), recovery sebum level and skin temperature as physiological responses. We asked subjects to judge thermal, dryness and comfort sensations as subjective responses using a rating scale. Sixteen non-smoking healthy male students were selected. The pre-room conditions were maintained at an air temperature (Ta) of 25 degrees C and a relative humidity (RH) of 50%. The test room conditions were adjusted to provide a Ta of 25 degrees C and RH levels of 10%, 30% and 50%. RH had no effect on the activity of the sebaceous gland and on cardiovascular reactions like blood pressure and HR. However, it was obvious that low RH affects SCT, the dryness of the ocular mucosa and the stratum corneum of the skin and causes a decrease in mean skin temperature. Under 30% RH, the eyes and skin become dry, and under 10% RH the nasal mucous membrane becomes dry as well as the eyes and skin, and the mean skin temperature decreases. These findings suggested that to avoid dryness of the eyes and skin, it is necessary to maintain an RH greater than 30%, and to avoid dryness of the nasal mucous membrane, it is necessary to maintain an RH greater than 10%. Subjects felt cold immediately after a change in RH while they had only a slight perception of dryness at the change of humidity.

Limits

Small study of young men with short exposures; part-funded by an HVAC company. This study looked at the effect of dry air on skin. It did not test tallow or The Everything Cream.

Abstract shown. Full text: J Physiol Anthropol, DOI 10.2114/jpa2.25.7 (PMID 16617203). Accessed 2026-09-30.

×

Egawa M, Oguri M, Kuwahara T, Takahashi M. Effect of exposure of human skin to a dry environment. Skin Res Technol. 2002;8(4):212-8.

Study

Human exposure study, before and after 3 or 6 hours of low humidity; forearm and cheek.

Key findings

  • Stratum corneum water content fell at 3 h and 6 h (P < 0.01).
  • Skin roughness parameters increased (P < 0.05).

Abstract

BACKGROUND/AIMS: Changes in the skin conditions after exposure to low humidity have been generally experienced in everyday life, but there have been few reports to approach it, especially in healthy skin. We have examined the effect of low humidity on healthy human skin by using noninvasive measurement devices. METHODS: Skin conditions on the ventral forearm and the cheek before and after 3 or 6 h exposure to low humidity were evaluated by measuring skin surface conductance, skin surface capacitance and transepidermal water loss. Skin surface replicas were also taken before and after exposure and analysed for roughness parameters: Ra (arithmetic mean roughness value), Rz (10-point height), Sm (mean value of the profile element) and VC1 (anisotropy of skin furrows). RESULTS: There was a significant decrease of water content of stratum corneum at both test sites from the time points 0 h to 3 h and 6 h (P < 0.01) and transepidermal water loss from the time point 0 h to 6 h (P < 0.05). Regarding the roughness parameters, a significant increase of Rz in the directions of 45 degrees/225 degrees and 90 degrees/270 degrees to the body axis and Sm in the directions of 0 degrees/180 degrees (P < 0.05) on the forearm and VC1 (P < 0.05) on the cheek. The parameter Rz also showed a tendency to increase in the directions of 45 degrees/225 degrees (P = 0.06) on the cheek. A specific pattern of the changes to be related to the Langer's lines in the surface morphology was observed. The changes of skin surface pattern in our experiment lead us to consider that exposure to low humidity even in such a short period would be related to inducing aggravation of skin texture and the formation of fine wrinkles. CONCLUSION: A short exposure of skin to a low-humidity environment induced changes in the moisture contents in the stratum corneum and skin surface pattern, which lead us to assume that a dry environment in our daily life would make fine wrinkles related to lack of water in the stratum corneum.

Limits

Abstract only; no control arm. This study looked at the effect of dry air on skin. It did not test tallow or The Everything Cream.

Abstract shown. Full text: Skin Res Technol, DOI 10.1034/j.1600-0846.2002.00351.x (PMID 12423539). Accessed 2026-09-30.

×

Jang SI, Han J, Lee M, Seo J, Kim BJ, Kim E. A study of skin characteristics according to humidity during sleep. Skin Res Technol. 2019;25(4):456-460.

Study

Crossover experiment; n=11 healthy women in their 20s and 30s; 7+ hours of sleep per condition.

Key findings

  • Skin hydration fell 24.23% after 7 hours of sleep at under 30% RH; no significant change at over 70% RH.
  • Water loss (TEWL) did not differ by humidity during sleep.

Abstract

INTRODUCTION: During sleep, the skin is exposed to various environments for example low or high humidity and temperature. And the average of 7-8 hours of sleeping in those situations can affect skin condition. Therefore, the objective of this study was to determine skin characteristics according to humidity during sleep. METHOD: Eleven healthy women in their ages of 20s and 30s were controlled. They slept more than 7 hours at lower than 30% relative humidity (RH) environment on the first day and at higher than 70% on the second day. The room temperature was controlled to 22 ± 5°C. Three measurement points were (a) before for sleep (after wash), (b) after 7 hours sleep (morning), and (c) after wash. Skin hydration, sebum secretion, and trans-epidermal water loss (TEWL) were measured. The statistical significance was determined at P < 0.05. RESULT: After 7 hours of sleep in 30% RH condition, skin hydration decreased by 24.23% significantly, but there was no significant difference after sleeping in 70% RH. The sebum level was increased after sleep at 30% RH. The TEWL did not show differences according to the humidity during sleep but significantly increased after facial cleansing in 30% RH sleeping condition. DISCUSSION: In this study, we confirmed that the changes in skin characteristics may be affected by humidity during sleep. When sleeping in dry environment, skin hydration decreases but the amount of sebum increases to compensate for skin dryness. Therefore, this study might suggest how to care the skin before sleep depending on the room humidity.

Limits

Small study (n=11), women only, fixed order. This study looked at the effect of dry air on skin. It did not test tallow or The Everything Cream.

Abstract shown. Full text: Skin Res Technol, DOI 10.1111/srt.12673 (PMID 30620080). Accessed 2026-09-30.

×

Purnamawati S, Indrastuti N, Danarti R, Saefudin T. The Role of Moisturizers in Addressing Various Kinds of Dermatitis: A Review. Clin Med Res. 2017;15(3-4):75-87.

Study

Narrative review.

Key findings

  • Ointments described as “particularly useful in low humidity (< 60%) environment.”

Abstract

Moisturizer is a major component of basic daily skin care, particularly in presence of epidermal barrier alteration and reduced epidermal water content. It is an important part of a dermatologist's strategy to maintain skin health as well as treating various dermatoses which co-exist with skin dryness and are linked to impaired skin barrier function, such as in atopic disorders as well as other types of dermatitis. Mastering the knowledge regarding mechanism of action, application, dosage, adverse effects as well as specific clinical usage of moisturizers is a must for a dermatologist in order to support their use, particularly for evidence-based, therapeutic purposes. This review discusses the use of moisturizer both for skin health maintenance as well as a definitive or adjuvant therapy for many kinds of dermatitis.

Limits

Review-level evidence; the review did not test tallow or The Everything Cream. This study looked at the effect of dry air on skin. It did not test tallow or The Everything Cream.

Abstract shown. Full text: Clin Med Res, DOI 10.3121/cmr.2017.1363 (PMID 29229630). Accessed 2026-09-30.