what is actually proven about the female body after forty

Treatments and supplements · Retinol

Is retinol as good as prescription retinoids?

What we can tell you today: how thoroughly this has been studied.

Studied in controlled trials

4 studies, of which 3 are controlled trials in people with a hundred participants or more. No overview combining them yet.

4 Large controlled trial 3 studies
3 Small study in people 1 study

This says how thoroughly something has been studied — not whether it works for you. What each study actually found is in the study itself, and in the plain-language write-ups we are adding.

Appears under: Skin aging

The studies