9 Best Glycolic Acid Products For Brightening, Bumps & More

As it works by increasing cell turnover, glycolic acid is great for rejuvenating the skin more generally, too. “By promoting cell renewal, it can also boost collagen production, which supports overall skin tone and firmness,” Dr Georgina explains.

Beyond its exfoliative properties, glycolic acid is also a known humectant (translation: attracts water to skin cells), which can be helpful if you’re dealing with dry, dull skin, as it binds moisture to the skin barrier.

What does glycolic acid do for armpits?

According to Dr Ahmed, glycolic acid can actually help with lifting pigmentation in the armpits. And it doesn’t just brighten discolouration – “it lowers the pH, so it reduces bacterial growth, and in turn body odour.“

How to use glycolic acid for armpits:

Though many users online have seen success applying glycolic acid toners directly to the underarms, this approach may prove irritating for beginners. There are gentler ways to make it work for you. As Dr Georgina suggests, “consider starting with a glycolic acid cleanser to habituate your skin to its effects.” And wherever you apply your glycolic acid, always follow with

What to look for in a glycolic acid

While the best glycolic acid product for you will depend on your skin and its sensitivities, the experts have some pointers on where to start. “Start with lower concentrations (5-8%) if you’re new to glycolic acid,“ says Dr Georgina, with Dr Ahmed adding that it’s best to see if you get any irritation and build up slowly. Glycolic acid serums and peels are generally more concentrated, offering targeted treatment of blemishes, while cleansers and moisturisers containing the acid may be more suitable for those after gentle and gradual exfoliation. Across the board, a low pH of between 3 to 4 is essential as this acidity level is what ensures glycolic acid products actually penetrate the skin.

Pay attention to other ingredients in the formula too. Look for hydrating additions like hyaluronic acid, as according to Dr Georgina, this pairing can help support barrier function. If you’re particularly sensitive, “Don’t combine glycolic acid with strong actives such as retinol or vitamin C in the same routine unless advised by a professional, as this can cause irritation.“

How often should I use glycolic acid?

“For best results, glycolic acid should be used consistently – typically two to three times per week for most skin types,“ Dr Georgina advises. You can build usage up over time to as many as five days a week, though the doctor says this will depend on what your skin can tolerate. As glycolic acid increases skin’s sensitivity to sunlight, Dr Ahmed stresses the importance of following with a barrier-supporting moisturiser and daily sun protection.“Make sure that you use a broad-spectrum SPF!“

Cleansers are generally mild enough to use daily, but consider using other glycolic acid products in your evening routine to minimise the risk of sun damage. And to prevent damage overall, both experts agree that glycolic acid should never be applied to broken skin. If in doubt, don’t overdo it. Per Dr Georgina, “more isn’t better. Over-exfoliation can lead to sensitivity and inflammation.”