Ingredient guide
Mandelic Acid
INCI name · mandelic acid
In short
Mandelic acid is an AHA that exfoliates more gradually thanks to its larger molecular size. It helps refine texture, reduce visible discoloration, and is often preferred by reactive or redness‑prone skin.
Skin type
Sensitive · Dry · Oily · Combination
Best used
Evening
What it is
C8 alpha-hydroxy acid from bitter almond; larger molecular weight than glycolic acid produces slower transdermal penetration, translating to a more gradual exfoliation onset favoured by reactive and rosacea-prone skin types; keratolytic and melanogenesis-suppressive; catalogue descriptions commonly associate it with reduction of post-inflammatory hyperpigmentation and melasma with lower erythema incidence than glycolic acid equivalents; moderate antibacterial activity useful in acne-related texture management.
Evidence receipt
No linked study yet
No verified study is linked to this exact ingredient and route. The guidance below describes conventional use; it is not evidence of efficacy.
When to use it
Evenings. The gentlest of the common AHAs, but still an acid.
A couple of nights a week to start.
On the label
Commonly 5–10% on labels
Its larger molecule works more slowly, which is why it suits reactive skin.
Pairs well with
Give these space
The same rules the product checker and routine builder run. Friendly scheduling, not prohibitions.
Where it sits
An evening treatment step. After cleansing, before the heavier layers go on.
- Cleanse
- Mandelic Acid
- Hydrate
- Moisturise
Also found as
Related
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Common questions
What does mandelic acid do for skin?
It gently lifts dull surface cells to improve smoothness and brightness. It can also help reduce the look of post‑blemish marks and uneven tone.
Is mandelic acid good for sensitive skin?
Yes. Its slower absorption often feels milder than glycolic acid, making it a common choice for sensitive or redness‑prone skin.
When should I use mandelic acid?
It’s typically used after cleansing on dry skin. Many people start a few times a week and increase as comfortable.
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Personal guidance, not medical advice.