Skin Basics
What Skin Does All Day: A Basic Timeline
Skin is not static between routines. It follows a rough daily and cellular rhythm that explains why the same product can behave differently depending on when it is used.
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Skin is not static between routines. It follows a rough daily and cellular rhythm that explains why the same product can behave differently depending on when it is used.
Read the article →
Skin type is not fixed, and most quizzes get it wrong. Here is a simple, repeatable way to observe what your skin…

The outermost layer of skin does more than most routines give it credit for. Here is what the barrier is made of,…

Most routines are longer than they need to be. Here is what dermatology considers the actual baseline, and why adding steps beyond…

A handful of ideas about how skin works keep circulating despite not holding up. Here are the most common ones, and what…