Ingredient breakdowns, not hype

A thick, fragrance-free occlusive cream built around three skin-identical ceramides and hyaluronic acid in a slow-release MVE delivery system. It is the reference point most barrier creams are compared against, largely because the formula is simple, the tub is large, and the price per ounce is low.

A soothing multi-purpose balm built on 5% panthenol with madecassoside and zinc salts. It sits between a moisturizer and an ointment: rich enough to work as an overnight rescue layer, light enough to use as a daily cream on very dry skin.

A high-strength, water-based niacinamide serum with 1% zinc PCA, sold at a price that made the ingredient mainstream. The formula is deliberately minimal, which is both its strength and the reason some people find it uncomfortable.

A 20% L-ascorbic acid serum with vitamin E and ferulic acid — the same three-active combination used in the most-cited antioxidant serum formulations, at a fraction of the price. The trade-off is stability: this is a fresh product that needs replacing.

An encapsulated retinaldehyde serum-cream at 0.06%. Retinaldehyde sits one conversion step from retinoic acid rather than two, so it acts faster than retinol at comparable irritation, and the encapsulation slows release further.

The only prescription-strength retinoid available over the counter in the US. Adapalene is a third-generation retinoid with unusually selective receptor binding, which is why it is effective against comedonal and inflammatory acne while irritating less than tretinoin at comparable strength.

A tinted, 100% mineral sunscreen using 9.0% zinc oxide and 7.0% titanium dioxide. The tint comes from iron oxides, which matters beyond cosmetics: iron oxides are the ingredient shown to help block the visible light implicated in melasma and post-inflammatory pigmentation.

A minimal hydrating serum built on 89% Vichy volcanic water with a low-molecular-weight hyaluronic acid. It is a hydration and layering product rather than a treatment — there is no exfoliant, retinoid, or brightening active in it.

A gel cleanser with 0.5% salicylic acid. As a rinse-off product it delivers a lower total dose than a leave-on BHA, which is the point: it gives acne-prone skin daily low-level exfoliation without the irritation of a second leave-on active.

An oil-free hyaluronic acid gel moisturizer that became the default lightweight cream for oily and combination skin. The formula is a humectant base sealed with dimethicone rather than lipids, which explains both its weightless finish and its limits in dry conditions.