How long should you wait between Tretinoin and Sunscreen?
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 as directed (if it is a night-time active, use it in the PM).
- In the morning, finish your routine with a broad-spectrum SPF 30 or higher as the last skincare step.
- Reapply every two hours when outdoors.
Why: full Tretinoin + Sunscreen 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.
- Sunscreens part 1: Mechanisms and efficacy. J Am Acad Dermatol. 2025.