Topic
Formulation & Ingredient Deep-Dives
articles.
Every Formulation & Ingredient Deep-Dives article in the journal — sourced, science-led, zero hype.
- Formulation Iron Oxides in Tinted Sunscreen: The One Common Ingredient That Blocks Visible Light If you have melasma or stubborn hyperpigmentation, the tint in your sunscreen isn't just makeup — it's the part that fights visible light. Read it →
- Formulation EU Sets a Phthalate Impurity Limit for the UV Filter DHHB (2025) A modern UVA filter got scrutinized in 2025 not for itself but for a phthalate that can sneak in during manufacturing, showing why purity matters as much as the INCI name. Read it →
- Formulation 'Baby-Friendly' Sunscreen Has No Standard Definition, 2025 Study Finds That cute 'baby' bottle isn't a regulated category, so here's which label claims are meaningful and which are pure marketing before you choose your child's sunscreen. Read it →
- Formulation Particle Size Matters: What a 2025 Study Says About Titanium Dioxide Safety 'Nano' on a mineral sunscreen scares a lot of shoppers - here's what particle size actually changes about safety and that see-through finish. Read it →
- Formulation The SPF 'Booster' Debate: Is Butyloctyl Salicylate Padding the Numbers? Some sunscreens post eye-catching SPF lab numbers partly thanks to 'booster' additives — here's what butyloctyl salicylate is and why it's controversial. Read it →
- Formulation EWG's 19th Sunscreen Guide: Only 1 in 5 Passed. Don't Panic. Headlines say only 20% of sunscreens 'made the cut' in EWG's 2025 guide — here's what that number really means for the bottle in your cabinet. Read it →
- Formulation Does Sunscreen Expire? The FDA's 3-Year Rule, Explained That half-used bottle from last summer might still protect you — or might not. The FDA has a clear stability standard that settles the question. Read it →
- Formulation Homosalate & Octisalate: The Quiet Workhorses in Your SPF They barely block UV on their own, yet homosalate and octisalate show up in almost every chemical sunscreen — here's the clever chemistry reason why. Read it →
- Formulation Oral Photoprotection Works (a Little): 24% Higher Sunburn Threshold in 8 Weeks 'Edible SPF' is everywhere online — a 2025 trial shows a real but modest effect, and why it never replaces the bottle. Read it →
- Formulation PA++++ vs. 'Broad Spectrum': How to Read UVA Protection That PA++++ on your Japanese sunscreen tells you something the US 'broad spectrum' label can't — here's how to decode both. Read it →
- 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 it →
- 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 it →
- 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 it →
- 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 it →
- 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 it →
- 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 it →
- 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 it →
- 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 it →
- 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 it →
- 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 it →
- 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 it →
- 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 it →
- 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 it →
- 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 it →