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Retinal in Skincare: The Complete Guide

Retinal reaches the active form of vitamin A in one step, retinol in two. Brands state it as 0.1% or 300 ppm, and morning SPF is not optional here either.

Retinal in Skincare: The Complete Guide

Retinal reaches the active form of vitamin A in one step, retinol in two. Brands state it as 0.1% or 300 ppm, and morning SPF is not optional here either.

Glycolic Acid and AHAs: The Complete Guide

An "AHA toner" need not contain any glycolic acid, and 7% and 21% call for completely different regimens. How to read the percentages, and when a peel belongs to a...

Glycolic Acid and AHAs: The Complete Guide

An "AHA toner" need not contain any glycolic acid, and 7% and 21% call for completely different regimens. How to read the percentages, and when a peel belongs to a...

Salicylic Acid in Skincare: The Complete Guide

BHA is oil-soluble, so it works inside the pore rather than on the surface, which is why it suits oily skin and blackheads. Plus why a face product may not...

Salicylic Acid in Skincare: The Complete Guide

BHA is oil-soluble, so it works inside the pore rather than on the surface, which is why it suits oily skin and blackheads. Plus why a face product may not...

Retinol: How It Works and How to Use It

Two rules: introduce retinol gradually, and never skip morning SPF. And the 0.3% on the bottle is no accident — it is the ceiling for cosmetics in the EU.

Retinol: How It Works and How to Use It

Two rules: introduce retinol gradually, and never skip morning SPF. And the 0.3% on the bottle is no accident — it is the ceiling for cosmetics in the EU.

Niacinamide: What It Is, How It Works and How t...

Choosing your first niacinamide product? Why 10% is not automatically better, where to start, and how it fits alongside vitamin C and retinol.

Niacinamide: What It Is, How It Works and How t...

Choosing your first niacinamide product? Why 10% is not automatically better, where to start, and how it fits alongside vitamin C and retinol.

PDRN in Skincare: What It Is and How It Works

PDRN in a cream and PDRN in a clinic are not the same thing. On a label this salmon-DNA ingredient hides under the name Sodium DNA — and it is...

PDRN in Skincare: What It Is and How It Works

PDRN in a cream and PDRN in a clinic are not the same thing. On a label this salmon-DNA ingredient hides under the name Sodium DNA — and it is...