Glycolic Acid

Glycolic acid gently lifts dead skin cells to reveal fresher, smoother skin and has demonstrated the ability to stimulate collagen synthesis, resulting in firmer-looking skin over time (4–6 months). It can also disperse melanin to help fade brown spots from sun damage and post-inflammatory hyperpigmentation (PIH), and with ongoing use it increases skin thickness and improves overall skin texture.

Increases skin sensitivity to UV radiation — daily sunscreen use is essential. Stronger concentrations (above 10%) may cause stinging, burning, visible peeling, redness, or irritation, especially with overuse. Not recommended for very sensitive or rosacea-prone skin; a BHA or PHA may be more suitable in those cases. Professional-strength peels (above 20%) should only be performed by a dermatologist. Avoid using at pH above 4–5 as efficacy is significantly reduced, and avoid very low pH (below 3) for at-home use due to irritation risk.