N-acetyl D Glucosamine

N-acetyl D-glucosamine is a water-soluble amino sugar derivative used in cosmetic formulas as a humectant and conditioning agent, used to attract moisture, improve the look of surface texture and tone, and maintain a comfortable, supple feel.
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Snapshot

Overview
An amino sugar that hydrates skin and smooths texture and tone.
Category
Hydration, Brightening, Barrier Support, Tone/Texture
Type
Humectant

Ratings

Overall Rating

Good

Comedogenic Risk

None

Not typically evaluated for comedogenicity — no standardized rating available.

Is N-acetyl D Glucosamine a Good Ingredient?

Evidence supports its hydrating and tone-improving roles, especially alongside niacinamide, while it stays water-soluble, stable, and generally low-irritation, which earns it Good. The data are promising but not extensive enough on their own for a higher rating.

Skin Benefits

Helps skin look smoother and more luminous by boosting surface hydration, and can diminish the appearance of flakiness and unevenness for a fresher look.

Uses in Skincare & Cosmetics

Often included in serums, essences, and moisturizers aimed at glow and hydration. Also appears in gentle toners to layer lightweight moisture.

Safety

Typically well tolerated and unlikely to irritate, though very sensitive skin may experience mild stinging or redness. No well-established regulatory restrictions for topical use.