Blog
July 20, 2026
Sunscreen Flashback: Why You Look White in Flash Photos
Mineral sunscreen shows up white under a camera flash because zinc oxide scatters visible light. Here is the mechanism, why the usual...
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July 17, 2026
Micro-Tint: How Japanese and Korean Sunscreen Cracked the Code for (Almost) Every Skin Tone
The white cast is a Western mineral problem. Japanese and Korean formulators solved it with micro-tint, a low level of iron oxides...
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July 11, 2026
Sunscreen Ingredients to Avoid During Pregnancy
Some chemical UV filters absorb into the bloodstream, and the FDA has asked for more safety data on them. Here are the...
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July 06, 2026
Types of Hyperpigmentation: Dark Spots, Melasma, and How Sun Protection Fits
Melasma, post-acne marks, and sun spots are different problems with one shared trigger: light. Here are the types of hyperpigmentation and the...
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July 04, 2026
Why Does Sunscreen Sting Your Eyes? And How to Stop It.
Sunscreen stings your eyes when chemical filters and fragrance migrate in sweat. A mineral, fragrance-free, water-free formula has far less to travel....
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July 02, 2026
Sunscreen That Doesn't Smell Like Sunscreen
Most sunscreen smells because of chemical filters, added fragrance, and oils going rancid. Swellies has none of them. Five ingredients. No smell.
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July 01, 2026
The Best Sunscreen for Acne-Prone Skin: What to Look For (and What to Avoid)
The wrong sunscreen can make breakouts worse. Here is what makes the best sunscreen for acne-prone skin, the ingredients to avoid, and...
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June 29, 2026
The Best Sunscreen for Melasma: Why Visible Light Matters More Than SPF
Melasma is triggered by visible light, not just UV, and most sunscreens only block UV. Here is what makes the best sunscreen...
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June 27, 2026
Vegan, Seed Oil-Free Sunscreen
Vegan and seed oil-free in one bottle. Five ingredients, a plant ester carrier, no tallow, no beeswax, no seed oils.
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