How long should you wait between Glycolic Acid and Salicylic Acid?
Does It Mix engine · wait time
When you're starting out, don't layer them back to back: use Glycolic Acid and Salicylic Acid at different times of day or on alternate days, then layer only if your skin stays calm.
The routine
- Choose one product that contains both, or alternate days.
- Start 2-3 times a week.
- Wear sunscreen every day; AHAs increase UV sensitivity.
Why: full Glycolic Acid + Salicylic Acid answer and sources.
FAQ
Does waiting 20 or 30 minutes between products help?
We haven't found good evidence that a set wait of many minutes changes how most skincare works. The practical reason to pause is letting each layer absorb so the next one doesn't pill or sting.
Sources
- Efficacy of alpha and beta hydroxy acid chemical peels in postacne pigmentation: a double-blinded, randomized, controlled trial. J Clin Aesthet Dermatol. 2022;15(1).
- Kornhauser A, Coelho SG, Hearing VJ. Applications of hydroxy acids: classification, mechanisms, and photoactivity. Clin Cosmet Investig Dermatol. 2010;3:135-142.
- Kaidbey K, et al. Topical glycolic acid enhances photodamage by ultraviolet light. Photodermatol Photoimmunol Photomed. 2003;19(1):21-27.
- Zaenglein AL, et al. Guidelines of care for the management of acne vulgaris. J Am Acad Dermatol. 2016;74(5):945-973.