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Formulation & Ingredient Deep-Dives articles.
Every Formulation & Ingredient Deep-Dives article on the blog — sourced, science-led, zero hype.
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Formulation SPF 30 vs 50 vs 100: What the Numbers Actually Block SPF 30 blocks about 97% of UVB and SPF 100 about 99% — the gains shrink fast, so how much you apply matters more than the number on the bottle. Read article →
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Formulation CeraVe and the Benzene Lawsuits: What L'Oréal's 2025 Fight Really Means A viral 'CeraVe causes cancer' claim spread in 2025, here's the gap between what the lawsuits allege, what Valisure measured, and what the FDA actually found. Read article →
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Formulation FDA vs. Valisure: The 2025 Fight Over Whose Benzene Numbers to Trust When an independent lab and the FDA report wildly different benzene levels for the same product, whose number should you believe? In 2025 that became a legal battleground. Read article →
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Formulation Why Benzoyl Peroxide Can Make Its Own Benzene in a Hot Car Unlike sunscreen, benzoyl peroxide can chemically generate benzene when it gets hot, which turns the 2025 testing story into a lesson about where you keep your skincare. Read article →
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Formulation The 6 (Plus One) Acne Products FDA Pulled in 2025: Lot Numbers to Check If your acne treatment has been baking in a hot bathroom or car, here are the exact products and lot numbers the FDA flagged, plus the storage habit that limits benzene. Read article →
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Formulation The FDA's Quiet 2025 Benzene Promise That Could Reshape Recalls The real fix for repeated benzene scares isn't another recall, it's an agreed-upon way to measure benzene, and in 2025 the FDA committed to publishing one. Read article →
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Formulation Kao's New Bioré Sunscreen Reacts to the Weather on Your Skin Japan's latest SPF launch uses humidity-responsive gel capsules that soak up sweat in the heat and release moisture in dry, air-conditioned air. Read article →
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Formulation 'Chemical vs Physical' Is a Myth: Mineral Filters Absorb UV Too The tidy story that mineral filters only 'reflect' UV while chemical filters 'absorb' it is largely wrong, and the truth is more interesting. Read article →
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Formulation Beef Tallow and DIY Sunscreen: 2025's 'Barnyard Wellness' Wave Tallow, raw milk, and kitchen-made SPF are flooding feeds as 'natural' skincare — here's the dermatologist breakdown of what's harmless and what leaves you burned. Read article →
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Formulation Why Avobenzone and Octocrylene Are Always Together Flip over almost any US chemical sunscreen and you'll see avobenzone next to octocrylene — here's the formulation logic behind that duo. Read article →
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Formulation Zinc Oxide vs. Titanium Dioxide: Which Mineral Filter Covers More Spectrum The two mineral filters aren't interchangeable — here's why zinc oxide covers more of the UVA spectrum and why so many formulas use both. Read article →
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Formulation Beauty of Joseon Launches Its First 100% Mineral Tinted Sunscreen in 12 Shades A fully mineral tinted fluid in 12 shades that takes direct aim at the white-cast problem keeping skeptics on chemical filters. Read article →
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Formulation Bemotrizinol: The First New US Sunscreen Filter in Decades You keep hearing bemotrizinol is finally coming to American shelves, so here is what it is, what it protects against, and why it took so long. Read article →
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Formulation Supergoop! Bumped Unseen Sunscreen to SPF 50 — Real Upgrade or Refresh? When a cult-favorite SPF gets reformulated, what actually changes under the hood — and how do you tell a real upgrade from a marketing refresh? Read article →
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Formulation Why Iron-Oxide Tinted Sunscreen Is Now the Move for Pigmentation (2025 Review) Your clear SPF leaves a protection gap against visible light — and a 2025 review explains why the fix is right on the label. Read article →