Niacinamide + Glycolic Acid (AHA)
Can you use Niacinamide with Glycolic Acid?
Yes. Niacinamide and glycolic acid can be used together.
Why
The concern people raise is that a low-pH acid might convert niacinamide to niacin and cause flushing. In practice the effect is minor, and many people layer them without problems. Waiting a few minutes between them, or using them at different times, avoids flushing if you notice it.
How to use them together
- PM: glycolic acid, wait a few minutes, then niacinamide and moisturizer.
- Or niacinamide in the morning and glycolic acid at night.
- Sunscreen daily, since AHAs raise sun sensitivity.
Who should be careful
People with very sensitive skin, rosacea or eczema should patch test new products first.
About the ingredients
Niacinamide: Vitamin B3. Well tolerated, supports the skin barrier and helps with redness, oil and uneven tone.
Glycolic Acid (AHA): The smallest alpha hydroxy acid. A chemical exfoliant for texture and dullness. It can increase sun sensitivity.
FAQ
Can I use Niacinamide and Glycolic Acid together?
Yes. Niacinamide and glycolic acid can be used together.
Should I use Niacinamide or Glycolic Acid in the morning or at night?
PM: glycolic acid, wait a few minutes, then niacinamide and moisturizer. Or niacinamide in the morning and glycolic acid at night.
Who should be careful combining Niacinamide and Glycolic Acid?
People with very sensitive skin, rosacea or eczema should patch test new products first.
Do I need sunscreen with Niacinamide and Glycolic Acid?
Yes. Daily broad-spectrum SPF 30+ is recommended with any active skincare routine.
Sources
Studies and reviews on these ingredients and, where available, on this specific combination.
- 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.
- Kaidbey K, et al. Topical glycolic acid enhances photodamage by ultraviolet light. Photodermatol Photoimmunol Photomed. 2003;19(1):21-27.
Related combinations
- Can you use Retinol with Niacinamide?
- Can you use Vitamin C with Niacinamide?
- Can you use Tretinoin with Niacinamide?
- Can you use Niacinamide with Salicylic Acid?
- Can you use Niacinamide with Hyaluronic Acid?
- Can you use Retinol with Glycolic Acid?
- Can you use Vitamin C with Glycolic Acid?
- Can you use Niacinamide with Benzoyl Peroxide?