At a glance
- Term
- AHA (alpha hydroxy acid)
- Area
- Ingredients
- Measurable from a selfie
- No
- Evidence
- Established
- Related
- BHA (beta hydroxy acid), PHA (polyhydroxy acid), Glycolic acid, Over-exfoliation
What AHA means on a skincare label
Look for the acid's name in the ingredient list, such as glycolic acid, lactic acid or mandelic acid. They all belong to the AHA family, so different names can still mean you're using the same type of exfoliant.
BHA means beta hydroxy acid, while PHA means polyhydroxy acid; both name other acid groups. The glossary explains ingredient terms you may see beside AHA on a product label.
What established evidence means here
AHA exfoliants have an established role in loosening dead surface cells to smooth texture and fade marks. That status doesn't guarantee that a particular product will suit your skin.
Skin can burn faster when you use AHAs, so sun protection belongs in the decision to use them. More exfoliation isn't a reason to expect a better result from your skincare.
Why a selfie can't measure AHA
A photo can't measure an ingredient group or tell you which acid your routine contains. Read the product label for that information instead of relying on a face score.
The common mistake is reading a number from a single photo as a fixed fact about your face. An AHA recommendation based on that number doesn't establish that you need exfoliation for concerns such as surface texture or marks.
Check your routine before adding an acid
The free routine checker reads the products you type in and flags duplicate actives and ordering mistakes; no photo is needed.
In How to safely exfoliate at home, the American Academy of Dermatology advises checking the products you already use. It also recommends moisturizer after exfoliation.
Don't exfoliate sunburned skin or open wounds. Over-exfoliation can leave skin red and irritated. If you're unsure whether exfoliation suits your skin, ask a dermatologist.
Questions people ask
- What does AHA stand for?
- AHA stands for alpha hydroxy acid, a group of water-soluble skincare exfoliants that includes glycolic, lactic and mandelic acid.
- Can AHA help fade marks?
- AHAs loosen dead surface cells to help fade marks and smooth texture, but that doesn't guarantee a particular result for your skin.
- Does AHA make skin more sensitive to the sun?
- Yes, skin burns faster. Consider that risk before adding an exfoliating acid to your routine.
Written from the measurements and ingredient facts on this site, then checked for the usual mistakes. Not medical advice.
Related pages
The closest pages in this section, picked by topic rather than by date.
- bha meaning: What beta hydroxy acid doesLearn bha meaning, why salicylic acid suits blackheads and clogged pores, its usual strength range, and why a selfie can't measure it.
- pha meaning: What polyhydroxy acids doLearn pha meaning, what these surface exfoliants do, why sensitive skin may suit them, and why a selfie can't measure their effects.
- Benzoyl peroxide meaning: what it does for acneUnderstand benzoyl peroxide meaning, how acne washes and creams work, why stronger isn't always better, and what a selfie can actually measu
- broad spectrum meaning: What the sunscreen label tells youLearn broad spectrum meaning, why UVA and UVB coverage matters alongside SPF, and why a selfie can't measure your sunscreen's protection.