L'mandelic acid is a alpha hydroxy acid (AHA) derived from bitter almonds. It belongs to the same family as glycolic acid and lactic acid, but has one characteristic that sets it apart from all the others: the largest molecule in the group.
That size changes the result. AHAs weaken the bonds that hold the dead cells of the stratum corneum together; a larger molecule passes through the surface more slowly and evenly, distributing the action instead of concentrating it. This results ingradual exfoliation without the irritation spike typical of more penetrating acids. That's why it is the AHA of choice when you need a safe result even on skin that cannot tolerate glycolic acid.
It works on uneven texture, dull complexion, and post-inflammatory marks, and is one of the few exfoliating acids also suitable for dark skin tones, where other AHAs can be risky. Use it in the evening, two or three times a week at first, increasing the frequency as the skin gets used to it. Sun protection in the morning is part of the protocol and reinforces the results. Radiance changes as early as the first four weeks.
In LeLang formulas, it is combined with plant enzymes and soothing active ingredients, an approach that delivers the exfoliating effect at low concentrations, distributing the work across several mechanisms instead of relying on the strength of a single acid. This is what makes a cosmetic peel repeatable over time without stressing the skin barrier.
On our blog, you'll find an in-depth look at mandelic acid treatments and how to incorporate them into your routine.
