What it does
- Gently exfoliates for smoother texture and brighter tone.
- Helps with uneven tone and blemish-prone skin.
- Milder than glycolic acid, suiting sensitive skin and deeper skin tones.
How it works
Mandelic acid is a larger AHA, so it penetrates more slowly and evenly, giving exfoliation with less irritation. It is widely documented to also have antibacterial character useful for blemish-prone skin, and is often favoured for sensitive skin and a gentler approach to uneven tone. Free-acid activity needs a low pH.
Use level
- Typical use level
- typically 5–10%
Commonly used at 5–10% at low pH for exfoliation. Start lower to build tolerance.
Formulation considerations
- Water-soluble; low pH (around 3–4) drives exfoliation.
- Gentler and slower than glycolic acid.
- Increases sun sensitivity; advise SPF.
What it pairs with & what to avoid
Pairs well with
- Hydrators and soothing actives
- Niacinamide
Use with care / avoid
- Stacking multiple strong acids or retinoids at once
- Skipping sunscreen
Regulatory status
Mandelic acid is listed in the EU CosIng database. As an AHA it carries sun-sensitivity labelling considerations; follow current limits for your market.
Common questions
Is mandelic acid gentler than glycolic acid?
Generally yes; its larger molecule penetrates more slowly, giving exfoliation with less irritation.
What percentage of mandelic acid should I use?
Around 5–10% at low pH for exfoliation; start lower to build tolerance.
Is mandelic acid good for acne-prone skin?
It exfoliates and has antibacterial character, so it is popular for blemish-prone and sensitive skin.