Ingredient guide
Glycolic acid
INCI name · glycolic acid
In short
Glycolic acid is an exfoliant generally associated with skin texture and smoothness and tone and pigmentation. It is often chosen for combination and oily skin. MIRU describes it by what is visible on skin, never as a treatment or cure.
What it is
Smallest AHA molecule. Deepest penetration. Use sunscreen the next day.
Evidence receipt
ModerateAHAs (glycolic/lactic) · applied to skin
Based on 2 sources
Open the citable recordStudied in relation to smoother, more refined-looking skin over time.
Studied as AHAs (glycolic/lactic): 8% glycolic cream, 8% lactic cream.
See 2 sources
Vehicle-controlled: 8% glycolic and 8% lactic creams improved photodamage in 76%/71% of facial sides vs 40% vehicle.
photodamage · 8% glycolic cream, 8% lactic cream
Archives of Dermatology, 1996AHAs produced ~25% increase in skin thickness with epidermal and dermal remodelling.
skin thickness, dermal remodelling
J Am Acad Dermatol, 1996
Affiliation note. Publication links report the study authors and their affiliations. MIRU does not infer independence from an affiliation alone.
When to use it
Evenings. Exfoliating acids sit best away from daylight hours.
A couple of nights a week to start.
On the label
Commonly 5–10% in leave-on products
Higher figures belong to short-contact peels and rinse-off formats, not daily layers.
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
- Glycolic acid
- Hydrate
- Moisturise
Related
Compare products
Browse product comparisonsWhere to find it
Examples, not a ranking. A product lookup can confirm identity and background; a verdict still needs the full ingredient list.
Nip+Fab Glycolic Fix Night Pads Extreme
Glycolic acid exfoliant used sparingly. Frequency is where most routines go wrong.
Product discovery is not efficacy proof. These examples are not ranked by commission.
Common questions
What does Glycolic acid do for skin?
Glycolic acid is associated in published research with skin texture and smoothness and tone and pigmentation. Smallest AHA molecule. Deepest penetration. Use sunscreen the next day. MIRU frames ingredients by what is visible, not by medical claims.
When should I use Glycolic acid?
Glycolic acid is typically used in the evening. Introduce any new active on its own first and add one product at a time so you can see how your skin responds.
Is Glycolic acid suitable for my skin type?
Glycolic acid is often chosen for combination and oily skin. It can be used with care. If your skin is reactive, patch-test first and watch for any irritation.
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Personal guidance, not medical advice.