Glow Definition
AHA in skincare refers to alpha hydroxy acid, a type of a water-soluble exfoliant naturally derived from sources like sugar cane, milk, or fruit. Common forms include glycolic acid, mandelic acid, and lactic acid, which work by loosening surface buildup to reveal a smoother, more even-looking complexion.
Often found in toners, serum, and masks, AHAs are well-suited for addressing dullness and rough texture — though they’re also found in multi-acid blends that support radiance more broadly.
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WHY IT MATTERS
AHAs in skincare play a key role in refining the skin’s surface — especially when texture, dullness, or buildup start to crowd out your natural glow. As water-soluble exfoliants, AHAs work by helping to loosen the bonds between dead surface cells, allowing fresh layers to come forward more easily. Unlike physical scrubs, they offer a gentler, formula-driven-approach to smoothing.
Different AHAs bring different qualities: glycolic acid is commonly used in higher-strength exfoliants, lactic acid is often chosen for its hydrating properties, and mandelic acid is frequently favored in routines that prioritize gentleness. AHAs’ glow-supportive role isn’t about instant results — it’s about the gradual shift that comes with giving skin a little more room to renew.
GLOW TIP If you’re new to AHAs, start with a lower concentration spaced a few days apart — and always pair with SPF, since exfoliated skin can be more sensitive to sunlight.
WHY WE LOVE IT FOR GLOW
AHAs help clear the way for radiance by gently lifting what no longer serves — dullness, buildup, and uneven texture. They support the kind of smoothness that lets light hit the skin just right, especially when layered thoughtfully into a routine.
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REACH FOR Paula’s Choice Skin Perfecting 8% AHA Gel Exfoliant — a leave-on glycolic acid gel that’s often used in evening routines when skin needs a deeper reset, without the heaviness of a cream-based exfoliant.
This gel-exfoliant sinks in fast and dries clear, making it easy to layer without disrupting the rest of your glow routine. It’s often slotted in after cleansing and before serums on nights reserved for a deeper reset. While some exfoliants take over, this one stays out of the way — supporting texture-focused routines without crowding them.
FAQ
What’s the difference between AHAs and BHAs?
If you’re comparing exfoliants and wondering what AHAs are in skincare versus BHAs, here’s the difference: AHAs are water-soluble and work on the surface of the skin, while BHAs are oil-soluble and can reach deeper into pores. AHAs are often used in routines focused on brightness and smoothing, while BHAs are commonly included in formulas for oily or congestion-prone skin.
Is AHA safe for sensitive skin?
It can be — especially when using options like lactic or mandelic acid, which are often better tolerated. Always patch test first and avoid layering with other strong actives until your skin adjusts.
When should I use AHA — morning or night?
Nighttime is usually best. Because AHAs may increase sun sensitivity, it’s a good idea to apply them in the evening and follow with SPF the next morning.
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GLOW PICKS: ACIDS, ENZYMES & EVERYTHING IN BETWEEN
This curated edit of the best exfoliants for glowing skin highlights our everyday AHA pick — a gentle, reliable option for smoothing without overdoing it. It’s featured as the kind of formula that fits into real routines — consistent, layerable, and glow-forward without being too aggressive.