What it does
- Supports a more even, brighter-looking tone.
- Supports hydration (a building block of hyaluronic acid).
- Works synergistically with niacinamide.
How it works
NAG is an amino sugar and a precursor in the skin's own hyaluronic-acid synthesis. It is widely documented to help with the look of uneven tone and to support hydration, and is frequently combined with niacinamide, which is documented to enhance its tone benefits.
Use level
- Typical use level
- typically 1–4%
Commonly used at 1–4%. Often formulated with niacinamide.
Formulation considerations
- Water-soluble; add to the water phase.
- Broadly compatible and gentle.
- Pairs particularly well with niacinamide.
What it pairs with & what to avoid
Pairs well with
- Niacinamide (classic pairing)
- Hyaluronic acid, humectants
Use with care / avoid
- No notable incompatibilities
Regulatory status
Acetyl glucosamine is listed in the EU CosIng database and is a well-established cosmetic ingredient.
Common questions
What does N-acetyl glucosamine do?
It supports a more even tone and hydration, and works synergistically with niacinamide.
What percentage of NAG is used?
Commonly 1–4%.
Can I use NAG with niacinamide?
Yes; the two are a well-known pairing for tone and hydration.