How long should you wait between Tretinoin and Niacinamide?
Does It Mix engine · wait time
No special wait is needed. Apply Tretinoin first, give it a minute to absorb, then the other.
The routine
- Apply Tretinoin at night on clean, dry skin.
- Use Niacinamide before or after it (thinnest texture first), or as your moisturizer step.
- Sunscreen every morning.
Why: full Tretinoin + Niacinamide 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
- Zaenglein AL, et al. Guidelines of care for the management of acne vulgaris. J Am Acad Dermatol. 2016;74(5):945-973.
- Martin B, et al. Chemical stability of adapalene and tretinoin when combined with benzoyl peroxide in presence and in absence of visible light and ultraviolet radiation. Br J Dermatol. 1998;139 Suppl 52:8-11.
- Bissett DL, et al. Niacinamide: a B vitamin that improves aging facial skin appearance. Dermatol Surg. 2005;31(7 Pt 2):860-865.