Common Name(s): Ascorbyl glucosamine,vitamin c compound,antioxidant brightening collagen

CAS Number: N/a

DESCRIPTION

What It Does: Neutralises reactive oxygen species, inhibits melanin production for brightening, and supports collagen triple helix formation as an essential prolyl hydroxylase cofactor.

Why It's Used: Provides vitamin c biological activity in a more formulation-stable, better-penetrating, or more soluble form than pure ascorbic acid whose enediol group degrades rapidly in aqueous formulation.

How It Works: Active ascorbate scavenges ros by electron donation (asc²⁻ → asc•⁻ → dha), chelates tyrosinase cu²⁺ for brightening, and maintains fe²⁺ in prolyl hydroxylase for collagen synthesis. modified forms release ascorbate through enzymatic hydrolysis.

Typically Found In: Brightening serums,anti-aging,vitamin c products

TECHNICAL DETAILS

Primary Category: Active ingredient – vitamin c derivative

Secondary Functions: Tyrosinase inhibitor,collagen cofactor

Application Areas:

Typical Concentration Range: 0.1%–20%

SOURCING & ETHICS

Vegan Status: Conditional - crustacean or fungal route; fungal chitosan is vegan

Halal Status: Conditional - crustacean or fungal route; feedstock declaration required

Source Notes: Synthetically produced vitamin c derivative. [audit 2026-07-29 rev2: chitin family; a fungal route exists that is both halal-simpler and vegan, so origin must be declared. determination requires shariah-panel sign-off.]

SKIN COMPATIBILITY

Irritancy Rating: 1/5 – very low

Comedogenicity Rating: 0/5 – non-comedogenic

Sensitivity Concerns: Non-irritating; suitable for all skin types.

Safe for Sensitive Skin: Yes

SAFETY & COMPATIBILITY

Safety Profile: Excellent safety profile. ewg score: 1.

Works Well With: Tocopherol,ferulic acid,niacinamide,spf

Avoid Combining With: No significant incompatibilities

SCIENTIFIC NOTE

The enediol c2-c3 system of ascorbic acid is the active radical-scavenging and enzyme cofactor site; chemical modification of c2 or c3 protects against oxidation while retaining activity after in-skin enzymatic regeneration.

Last Verified: 2026-03-12

Primary Sources: Cosing database,ascorbyl glucosamine vitamin c review