Skin Cancer Runs In My Family. So Here's What We Immediately Changed — And It Blew Our Minds.
about what I'm putting on their skin.
My grandmother had skin cancer removed twice. My uncle, once. So when I became a mom, sunscreen lived in every bag, every car door pocket, every beach tote. I figured that alone meant I was doing this right.
Then I read an FDA-backed study, and it knocked the wind out of me a little.
In 2019 and 2020, FDA-funded researchers published findings in JAMA showing that several chemical UV filters used in everyday sunscreen — oxybenzone among them — are absorbed into the bloodstream at levels well above the threshold the agency says should trigger additional safety testing. The FDA's own 2019 review flagged oxybenzone specifically for further study into its potential hormone effects, before it can be confirmed safe for the kind of daily, long-term use most of us assume is fine.
I read that paragraph three times. Then I went through every bottle in our house like it was a checklist — holding each one up against what the FDA has actually confirmed as safe, instead of what the marketing on the bottle told me.
The 4-question checklist I now run every sunscreen through
Does it use a mineral filter the FDA classifies as GRASE — zinc oxide or titanium dioxide?
Is it free of oxybenzone and the other chemical filters still under FDA review?
Is the zinc oxide listed as non-nano, so it stays on the skin's surface instead of absorbing in?
Would I feel fine knowing exactly where every ingredient ends up in my kid's body?
Three of our bottles failed that checklist on the very first question. That's when I knew this wasn't a one-night research rabbit hole — it was something we actually needed to fix.
Three things that changed how I shop for SPF
Most SPFs use chemical UV filters — like oxybenzone — that work by absorbing into skin. They don't sit on top and reflect UV the way I assumed. They get absorbed, then convert UV radiation into heat inside the skin. That's the mechanism, not a guess.
Because they're absorbed, they don't stay on the skin's surface. FDA-funded pharmacokinetic studies have found several common chemical UV filters, oxybenzone included, show up in the bloodstream after normal use — at levels above what the agency says should trigger more safety testing before being labeled fully understood.
Out of every UV filter on the market, the FDA has only classified two as GRASE — Generally Recognized As Safe and Effective. Zinc oxide and titanium dioxide. Both mineral. Neither one made it onto a single bottle in my old beach bag.
"I couldn't believe I'd been putting that on my kids for years."
What "GRASE" actually means
It's an FDA designation, not a marketing term. In its 2019 sunscreen review, the FDA asked for more safety data on twelve of the sixteen active ingredients allowed in U.S. sunscreens — including oxybenzone — before it could confirm they're safe and effective for regular, long-term use. Zinc oxide and titanium dioxide were the only two filters that didn't need that flag.
Source: U.S. Food & Drug Administration, proposed sunscreen monograph rule (2019); pharmacokinetic studies published in JAMA (2019, 2020).
Mineral instead of chemical — and tallow instead of nothing
So we switched. Not to "natural" in the vague, marketing sense — to a sunscreen built around non-nano zinc oxide, one of the only two filters that actually cleared the FDA's bar, paired with grass-fed tallow instead of a synthetic emulsifier base.
| Chemical SPF | Mineral + Tallow | |
|---|---|---|
| How it works |  Absorbs into skin, converts UV to heat |
 Sits on the surface, reflects UV |
| FDA status | Not yet confirmed GRASE |
Zinc oxide is GRASE-classified |
| Goes into bloodstream | Detected in studies |
No systemic absorption shown |
| Skin barrier support | None built in |
Bioidentical lipids from tallow |
| Stings little ones' eyes | Often |
Formulated to avoid it |
The tallow part surprised me most. It's not filler — it's a fat that's structurally close to what our own skin already produces. It doesn't fight the skin barrier or sit on top of it like a synthetic film. It works with it. That's the part that made this feel less like "clean beauty" marketing and more like basic biology.
"My kids actually ask for it now — it doesn't sting their eyes anymore."
Before
After
Same beach, same kid — just a different sunscreen. The eye-sting fights stopped the day we switched.
Sky & Sol vs. typical baby sunscreen
| Most Baby Sunscreens |  |
|
|---|---|---|
| Active filter | Mineral or chemical, often an unspecified blend | Non-nano zinc oxide (FDA GRASE) |
| Carrier base | Synthetic emulsifiers | Grass-fed tallow & jojoba |
| Fragrance | Often added | Fragrance-free |
| Non-nano disclosure | Not always listed on label | Specified on label |
| Skin barrier support | None built in | Bioidentical lipids from tallow |
| Eye-sting complaints | Common, per parent reviews | Formulated to avoid it |
Comparison reflects general formulation patterns across mass-market baby sunscreens. Always check the label of whatever you're currently using — plenty of good mineral options exist.
Other parents, same questions
"I was the skeptic in my house. I figured mineral sunscreen meant a white, chalky mess. This one actually rubs in clear on both kids."
"My daughter has eczema and almost everything makes her flare. This is the first SPF that hasn't irritated her in two summers."
"I didn't expect to care this much about sunscreen ingredients, but here I am, telling every mom at the pool about it."
Sky & Sol — non-nano zinc oxide
+ grass-fed tallow
Protects from UV with a mineral filter the FDA classifies as GRASE
Supports the skin barrier instead of working against it
No oxybenzone, no synthetic chemical UV filters
Formulated so it doesn't sting eyes — kid-tested, literally
Reef safe, for the beach days that matter
Questions I had too
I'm not going to pretend switching sunscreens fixes everything, or that I have this all figured out. I just know I sleep a little easier knowing what's on my kids' skin, instead of just trusting the bottle because it was the one on the shelf.
If skin cancer runs in your family too, I'd rather you read the label than take my word for it. But if you want to start where I landed, here it is.
- Casey