What it does
Mandelic acid is derived from bitter almonds and has a notably large molecular size, so it penetrates slowly and evenly. That slowness is the feature: less irritation, less risk of the inflammation that leaves dark marks behind on deeper skin tones.
It is frequently recommended where glycolic acid has caused problems, and it has mild antibacterial properties that make it useful alongside mild acne.
Expect slower results than glycolic acid. That is the trade you are making, and for reactive skin it is usually the right one.
In a routine
Layers well with
- Niacinamide
- Hyaluronic acid
Do not layer with
- Retinol
- Glycolic acid
Same routine is fine for some pairs — same step is the problem. Split them morning and evening when in doubt.
