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Formulation & Ingredient Deep-Dives articles.

Every Formulation & Ingredient Deep-Dives article on the blog — sourced, science-led, zero hype.

Formulation 13 Mar 2026 Niacinamide + SPF: A Power Pairing for Spring Why this combo supports your barrier under UV stress. Read article →
Formulation 04 Mar 2026 The Science of Why Some Sunscreens Feel Greasy Oil phase, filters, and finish: what really drives the slip. Read article →
Formulation 27 Feb 2026 What Makes a Sunscreen Water-Resistant (and Why None Are Waterproof) The FDA banned the word 'waterproof,' and the science explains why. Read article →
Formulation 20 Feb 2026 Antioxidants in Sunscreen: Hype or Help? Vitamin C, vitamin E, and the Pinnell research that kicked off the whole idea. Read article →
Formulation 11 Feb 2026 Why Mineral Sunscreens Leave a White Cast (Real Science) It's particle size and visible light doing it, not your technique. Read article →
Formulation 29 Jan 2026 What 'Photostable' Actually Means on a Sunscreen Label Not all filters survive the sun they're supposed to block. Read article →
Formulation 14 Jan 2026 Why Some Sunscreens Pill and Others Glide The formulation science behind that annoying eraser-crumb effect. Read article →
Formulation 18 Nov 2025 Does Sunscreen Cause Vitamin D Deficiency? A 2025 Trial Adds Nuance to the Myth The 'sunscreen blocks vitamin D' claim is half-wrong and half-right, and a 2025 randomized trial shows exactly where the truth sits. Read article →
Formulation 16 Nov 2025 Mineral Sunscreens Recalled for 'Splitting': The 2025 Australian Separation Recalls Several zinc sunscreens were pulled in Australia in late 2025 for physically separating in the bottle, here's why that compromises protection. Read article →
Formulation 26 Sept 2025 2025 Trial: Tinted Sunscreen Beat Untinted for Evening Out Melasma If you have melasma, the tint isn't just cosmetic — a 2025 trial shows iron-oxide color doing real work against the visible light that plain SPF lets through. Read article →
Formulation 26 Aug 2025 A 2025 Study Scores White Cast: How Much Zinc Before Mineral SPF Looks Ashy A 2025 PLoS One study built the first standardized white-cast scale, giving you a concrete zinc-oxide percentage rule for picking a mineral SPF that won't leave you ashy. Read article →
Formulation 23 Aug 2025 Why Tinted Sunscreen Is the Hidden Upgrade for Hyperpigmentation Tinted sunscreens do something clear formulas can't, and an NPR report explains why that matters most for melasma and hyperpigmentation-prone skin. Read article →
Formulation 24 Jul 2025 Are Nano Zinc & Titanium Dioxide Safe? What Penetration Studies Show The fear that nanoparticles slip into your bloodstream is widespread - here's what the actual penetration studies, including a major regulatory review, found. Read article →
Formulation 16 Jul 2025 Beyond UV: Why 2025 Research Says Sunscreens Should Fight Blue Light and Infrared Sun protection is expanding past UVA and UVB - a 2025 scientific review explains the blue-light and infrared gap your 'broad spectrum' label doesn't cover. Read article →
Formulation 11 Jul 2025 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 article →
Formulation 28 Jun 2025 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 article →
Formulation 24 Jun 2025 '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 article →
Formulation 09 Jun 2025 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 article →
Formulation 13 May 2025 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 article →
Formulation 11 May 2025 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 article →
Formulation 06 May 2025 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 article →
Formulation 20 Apr 2025 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 article →
Formulation 14 Apr 2025 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 article →
Formulation 04 Apr 2025 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 article →