Blog
May 25, 2026
How Much Zinc Oxide Does Sunscreen Actually Need?
A zinc oxide concentration of 20 to 25% is what parents should look for in a mineral sunscreen. Below 15%, zinc oxide...
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May 22, 2026
Should Men Wear Tinted Sunscreen?
Yes. But not for the reason you're thinking. The white cast problem Most mineral sunscreens leave a white film on skin. That's...
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May 20, 2026
Is My Sunscreen Safe for Freshwater?
The reef-safe conversation ignores lakes, ponds, and rivers. That's a problem. Everyone who's read a sunscreen label in the last five years...
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May 18, 2026
Are Sunscreens Tested for Pesticides?
No federal law requires pesticide testing on sunscreen ingredients. Here's how the regulatory gap works, where the risk actually lives in most...
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May 16, 2026
Are Seed Oils in Sunscreen Safe? What the Scrutiny Is Actually About
The seed oil conversation started in food. Soybean oil, canola oil, corn oil, refined vegetable oils high in linoleic acid that became...
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May 15, 2026
Can You Use Diaper Rash Cream as Sunscreen? A Lab-Tested Answer.
Diaper rash cream has zinc oxide. So does sunscreen. The active ingredient is the same. But using diaper rash cream as sunscreen...
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May 14, 2026
Seed Oils Have No Meaningful SPF. Here's What the Data Shows.
A claim that will not die: raspberry seed oil has an SPF of 28 to 50. It shows up in DIY sunscreen...
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May 13, 2026
The Best Mineral Sunscreen for Tattoos, and Why Formula Matters
UV radiation breaks down tattoo ink. This is the same photodegradation that happens to any organic pigment exposed to UV light, occurring...
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May 10, 2026
Mineral Sunscreen and Body Hair: Why the White Cast Happens and How to Fix It
Most mineral sunscreens turn chest and back hair white. Here is why it happens, which ingredients are responsible, and what the formula...
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