How long should you wait between Vitamin C and Niacinamide?
Does It Mix engine · wait time
No special wait is needed. Apply Vitamin C first, give it a minute to absorb, then the other.
The routine
- Layer vitamin C first, then niacinamide, then moisturizer and sunscreen.
- If you notice flushing, apply them at different times.
Why: full Vitamin C + 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
- Pullar JM, Carr AC, Vissers MCM. The roles of vitamin C in skin health. Nutrients. 2017;9(8):866.
- Al-Niaimi F, Chiam NYZ. Topical vitamin C and the skin: mechanisms of action and clinical applications. J Clin Aesthet Dermatol. 2017;10(7):14-17.
- Bissett DL, et al. Niacinamide: a B vitamin that improves aging facial skin appearance. Dermatol Surg. 2005;31(7 Pt 2):860-865.