Glow Definition
AHA (short for alpha hydroxy acid) is a water-soluble exfoliant naturally derived from sources like sugar cane, milk, and fruit. Known for sloughing off dull surface cells, it helps visibly brighten, smooth texture, and boost radiance — making it a favorite for fast, glow-giving results.
(If you’ve ever searched what AHAs are in skincare, you’re not alone — this gentle acid has become a glow essential for a reason.)
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Why It Matters
AHAs are your shortcut to skin that looks like it’s been reset. By breaking down the glue that holds dead skin cells together, they reveal the fresh layer beneath — helping to improve tone, texture, and even the look of fine lines. Unlike physical scrubs, they exfoliate chemically, which means less friction and more consistent results.
Different AHAs offer different benefits: glycolic acid penetrates deeply, lactic acid hydrates while exfoliating, and mandelic acid is extra gentle — making it perfect for sensitive skin. Whether you’re chasing glow or clarity, AHAs work fast and layer beautifully into most routines.
GLOW TIP Start with AHAs just 1-2 nights a week and build up — pair with hydrating serums and SPF to avoid overexfoliation and support your glow barrier.
Why We Love It For Glow
AHAs give that glassy, light-catching glow that looks like you’ve just had a facial. They’re fast, effective, and — when used right — incredibly rewarding. For dull, rough, or tired skin, nothing resets quite like a well-formulated AHA.
Reach for Paula’s Choice Skin Perfecting 8% AHA Gel Exfoliant — a cult favorite glycolic acid formula that gently resurfaces dull skin, smooths texture, and reveals a more radiant, even tone.
This lightweight gel layers easily under serums or moisturizers and is know for delivering clarity without the sting — ideal for glow routines that prioritize refinement, radiance, and minimal irritation.
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 skin’s surface, while BHAs are oil-soluble and go deeper into pores. Use AHAs for glow and texture, and BHAs for blackheads and oil control.
Is AHA safe for sensitive skin?
It can be — opt for lactic or mandelic acid and avoid overusing it. Always patch test and avoid combining it with other strong actives until your skin adjusts.
When should I use AHA — morning or night?
Nighttime is best. AHAs can increase sun sensitivity, so always follow with SPF the next day.
Featured in our: Night Skincare Routine — The Ultimate 2025 Guide for Repair and Renewal. Our seasonal breakdown of nighttime essentials, where we highlight AHA exfoliants as a gentle yet effective way to boost radiance while you sleep.