https://behindtheinci.com Independent skincare journalism. Breaking down the science of skin — ingredient by ingredient. Every formula, every lie on the label. en-AU Tue, 14 Apr 2026 08:09:13 GMT https://d2xsxph8kpxj0f.cloudfront.net/310519663375502795/AAUf7XmfS2MDxwJ8dQUT7C/binci-hero-main-L5wJQjzvK64ejoJzqDEyv2.webp https://behindtheinci.com editor@behindtheinci.com (Mara Sollis) editor@behindtheinci.com Copyright 2026 Behind The INCI. All rights reserved. 60 https://behindtheinci.com/article/niacinamide-the-ingredient-everyone-is-using-wrong https://behindtheinci.com/article/niacinamide-the-ingredient-everyone-is-using-wrong Niacinamide is now in everything from £5 drugstore serums to £200 clinical treatments. But the concentration wars, the vitamin C myths, and the flush debates have buried the actual science. We went back to the literature. Sun, 01 Mar 2026 05:00:00 GMT Ingredient Deep Dive editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/rosehip-oil-the-fatty-acid-profile-behind-the-hype https://behindtheinci.com/article/rosehip-oil-the-fatty-acid-profile-behind-the-hype Rosa canina seed oil contains one of the highest concentrations of linoleic acid of any carrier oil — up to 54%. That single fact explains most of its cosmetic benefits. Everything else is marketing. Sun, 01 Feb 2026 05:00:00 GMT Ingredient Deep Dive editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/hyaluronic-acid-molecular-weight-matters https://behindtheinci.com/article/hyaluronic-acid-molecular-weight-matters The hyaluronic acid in a £10 serum and a £100 serum may share the same INCI name — Sodium Hyaluronate — but behave completely differently on skin. Molecular weight is the variable that marketing never mentions. Mon, 01 Dec 2025 05:00:00 GMT Ingredient Deep Dive editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/squalane-vs-squalene-the-difference-that-matters https://behindtheinci.com/article/squalane-vs-squalene-the-difference-that-matters Squalene is unstable, oxidises rapidly, and was historically sourced from shark liver. Squalane is its hydrogenated, stable, plant-derived counterpart. The INCI list will tell you which one you are buying — if you know what to look for. Wed, 01 Oct 2025 04:00:00 GMT Ingredient Deep Dive editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/retinol-the-complete-guide https://behindtheinci.com/article/retinol-the-complete-guide Retinol has the strongest evidence base of any cosmetic anti-ageing ingredient. It also has the highest rate of misuse. The gap between the clinical literature and the consumer experience is almost entirely a formulation and education problem. Thu, 01 Jan 2026 05:00:00 GMT Ingredient Deep Dive editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/emulsification-the-science-behind-every-cream https://behindtheinci.com/article/emulsification-the-science-behind-every-cream HLB values, phase inversion temperatures, and the difference between O/W and W/O emulsions — the fundamentals that anyone evaluating a moisturiser needs to understand before they trust a label. Sat, 01 Nov 2025 04:00:00 GMT Formulation Science editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/ph-the-invisible-variable-in-every-skincare-product https://behindtheinci.com/article/ph-the-invisible-variable-in-every-skincare-product Vitamin C requires a pH below 3.5 to be effective. AHAs need to be below 4.0. Retinol is most stable above 5.5. Most brands do not disclose their product pH. Here is why that matters — and how to find out. Mon, 01 Sep 2025 04:00:00 GMT Formulation Science editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/preservatives-the-most-misunderstood-ingredient-category https://behindtheinci.com/article/preservatives-the-most-misunderstood-ingredient-category The Fri, 01 Aug 2025 04:00:00 GMT Formulation Science editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/how-to-read-an-inci-list https://behindtheinci.com/article/how-to-read-an-inci-list Every cosmetic product sold in Australia must carry a full ingredient list in INCI format. Most consumers ignore it. Once you know how to read one, you cannot unknow it. Thu, 01 Jan 2026 05:00:00 GMT Formulation Basics editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/understanding-comedogenicity-ratings https://behindtheinci.com/article/understanding-comedogenicity-ratings The comedogenicity rating system that skincare communities rely on was developed from rabbit ear assays in the 1970s. The correlation with human acne is weak. Here is what the evidence actually says. Tue, 01 Jul 2025 04:00:00 GMT Formulation Basics editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/who-owns-the-ordinary-cerave-la-roche-posay https://behindtheinci.com/article/who-owns-the-ordinary-cerave-la-roche-posay DECIEM (The Ordinary) is majority-owned by Estée Lauder. CeraVe and La Roche-Posay are owned by L Sun, 01 Mar 2026 05:00:00 GMT Industry Analysis editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/who-really-owns-your-skincare-the-conglomerate-map https://behindtheinci.com/article/who-really-owns-your-skincare-the-conglomerate-map Tatcha was acquired by Unilever for a reported $500 million. The Ordinary is owned by Estée Lauder. CeraVe and La Roche-Posay are L Sun, 01 Mar 2026 05:00:00 GMT Industry Analysis editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/brand-exposed-the-ordinary-niacinamide-10-zinc-1 https://behindtheinci.com/article/brand-exposed-the-ordinary-niacinamide-10-zinc-1 The Ordinary Sun, 01 Mar 2026 05:00:00 GMT Brand Exposed editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/brand-exposed-cerave-moisturising-cream-the-ceramide-question https://behindtheinci.com/article/brand-exposed-cerave-moisturising-cream-the-ceramide-question CeraVe Sun, 01 Feb 2026 05:00:00 GMT Brand Exposed editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/the-fragrance-loophole-why-parfum-on-an-inci-list-can-hide-3000-chemicals https://behindtheinci.com/article/the-fragrance-loophole-why-parfum-on-an-inci-list-can-hide-3000-chemicals Cosmetic brands are legally allowed to list every fragrance ingredient under a single word: Sun, 01 Mar 2026 05:00:00 GMT Brand Exposed editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/the-fragrance-loophole-parfum-hides-3000-chemicals https://behindtheinci.com/article/the-fragrance-loophole-parfum-hides-3000-chemicals Under Australian, EU, and US cosmetic regulations, every fragrance ingredient in a product can be listed under a single word: Sat, 01 Nov 2025 04:00:00 GMT Ingredient Deep Dive editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/clinically-proven-how-brands-legally-make-claims-without-evidence https://behindtheinci.com/article/clinically-proven-how-brands-legally-make-claims-without-evidence L-ascorbic acid (Vitamin C) oxidises in the presence of light, heat, and air. Once oxidised, it has no antioxidant or brightening activity. Most brands do not disclose the pH of their vitamin C products, the packaging type, or the stability data. Here is what you need to know. Wed, 01 Oct 2025 04:00:00 GMT Industry Analysis editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/vitamin-c-serum-oxidation-why-your-bottle-is-probably-already-dead https://behindtheinci.com/article/vitamin-c-serum-oxidation-why-your-bottle-is-probably-already-dead SPF is measured using 2mg/cm² of product — roughly twice what most people apply. Under real-world application conditions, SPF 50 performs more like SPF 7–8. The testing methodology is standardised, the labelling is accurate, and the gap between the two is almost never disclosed. Mon, 01 Sep 2025 04:00:00 GMT Ingredient Deep Dive editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/spf-testing-why-your-sunscreen-probably-doesnt-perform-as-labelled https://behindtheinci.com/article/spf-testing-why-your-sunscreen-probably-doesnt-perform-as-labelled Palmitoyl Pentapeptide-4 (Matrixyl), Acetyl Hexapeptide-3 (Argireline), Copper Tripeptide-1 — these are the peptides that appear in premium anti-ageing products at significant price premiums. The clinical evidence for their efficacy, when examined independently, is considerably thinner than the marketing implies. Fri, 01 Aug 2025 04:00:00 GMT Formulation Science editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/peptides-in-skincare-the-evidence-gap-behind-the-price-tag https://behindtheinci.com/article/peptides-in-skincare-the-evidence-gap-behind-the-price-tag High molecular weight hyaluronic acid (1,000–1,800 kDa) sits on the skin surface and forms a film. Low molecular weight (50–300 kDa) penetrates into the epidermis. Nano-hyaluronic acid (below 10 kDa) may reach the dermis. The INCI name Tue, 01 Jul 2025 04:00:00 GMT Ingredient Deep Dive editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/natural-skincare-what-natural-actually-means-on-a-label https://behindtheinci.com/article/natural-skincare-what-natural-actually-means-on-a-label Niacinamide has strong clinical evidence for sebum regulation, hyperpigmentation, and barrier function at 2–5%. The marketing claims it does everything from shrinking pores to eliminating dark circles. Here is what the peer-reviewed literature actually supports — and what it does not. Sun, 01 Jun 2025 04:00:00 GMT Industry Analysis editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/hyaluronic-acid-molecular-weight-the-size-that-determines-what-it-does https://behindtheinci.com/article/hyaluronic-acid-molecular-weight-the-size-that-determines-what-it-does Tretinoin (retinoic acid) is the gold standard. Retinaldehyde converts to retinoic acid in one step. Retinol requires two conversion steps. Retinyl palmitate requires three. Each step reduces efficacy and increases tolerability. Here is the complete hierarchy — and what it means for your routine. Thu, 01 May 2025 04:00:00 GMT Ingredient Deep Dive editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/niacinamide-the-evidence-vs-the-marketing https://behindtheinci.com/article/niacinamide-the-evidence-vs-the-marketing Ceramides are expensive raw materials. A formulation with clinically meaningful ceramide concentrations (0.5–2% total ceramide complex) costs significantly more to produce than one with trace amounts. The INCI list positioning of ceramides in most products tells a story brands prefer not to tell. Tue, 01 Apr 2025 04:00:00 GMT Ingredient Deep Dive editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/retinoid-hierarchy-retinol-retinal-tretinoin-the-complete-guide https://behindtheinci.com/article/retinoid-hierarchy-retinol-retinal-tretinoin-the-complete-guide Sat, 01 Mar 2025 05:00:00 GMT Ingredient Deep Dive editor@behindtheinci.com (Mara Sollis) https://behindtheinci.com/article/ceramide-concentration-what-your-barrier-cream-actually-contains https://behindtheinci.com/article/ceramide-concentration-what-your-barrier-cream-actually-contains Sat, 01 Feb 2025 05:00:00 GMT Formulation Science editor@behindtheinci.com (Mara Sollis)