How long should you wait between Niacinamide and Salicylic Acid?
Does It Mix engine · wait time
No special wait is needed. Apply Salicylic Acid first, give it a minute to absorb, then the other.
The routine
- Apply salicylic acid first (or use it as a cleanser), then niacinamide, then moisturizer.
- Start the BHA a few times a week.
- Sunscreen every morning.
Why: full Niacinamide + 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
- Bissett DL, et al. Niacinamide: a B vitamin that improves aging facial skin appearance. Dermatol Surg. 2005;31(7 Pt 2):860-865.
- Kornhauser A, Coelho SG, Hearing VJ. Applications of hydroxy acids: classification, mechanisms, and photoactivity. Clin Cosmet Investig Dermatol. 2010;3:135-142.
- Zaenglein AL, et al. Guidelines of care for the management of acne vulgaris. J Am Acad Dermatol. 2016;74(5):945-973.