Ingredient Layering
Polyglutamic Acid and Niacinamide work great together!
Step 1
Niacinamide
brightener
Step 2
Polyglutamic Acid
humectant
General rule: apply thinnest/most active ingredients first, thicker/occlusive ingredients last.
humectant
The "holds 5,000× its weight in water" flex. Works like hyaluronic acid's richer cousin — sits on top of skin and locks moisture in.
brightener
Niacinamide is one of the most versatile and well-researched skincare actives available. It regulates sebum production, strengthens the skin barrier, fades hyperpigmentation, and minimizes pore appearance — all with minimal irritation risk. If you could only pick one active, this would be a strong contender.
What pairs with Polyglutamic Acid?
What pairs with Niacinamide?
Polyglutamic Acid and Niacinamide work great together! They can be layered in the same K-beauty routine.
Apply thinnest/most active first. Based on their categories, apply Polyglutamic Acid first, then follow with the other.
We don't currently track any products that combine Polyglutamic Acid and Niacinamide as key ingredients. Layering two separate products is the typical approach.
Polyglutamic Acid has 3/5 clinical evidence; Niacinamide has 5/5. Niacinamide has stronger clinical evidence.