Common Name(s): Ascorbyl carboxydecyl trisiloxane,ascorbyl carboxydecyl trisiloxane,ascorbic acid ester derivative,multi-function vitamin c conjugate
CAS Number: N/a
DESCRIPTION
What It Does: Delivers vitamin c brightening, antioxidant protection, and collagen synthesis stimulation in a conjugated form combining with the co-active's specific benefit โ hyaluronate (hydration), tocopherol (lipid antioxidant synergy), or siloxane (penetration enhancement).
Why It's Used: Ascorbic acid conjugation improves the primary formulation limitation of free vitamin c โ oxidative instability โ while adding functional properties from the conjugated moiety for multi-benefit activity from a single ingredient.
How It Works: Skin esterases hydrolyse the ascorbate ester releasing free ascorbic acid in situ. the conjugate's altered logp and molecular weight determine sc delivery depth. ascorbate after release: tyrosinase cuยฒโบ reduction (brightening, ic50 ~1 mm); prolyl hydroxylase cofactor (collagen triple-helix stability); lipid peroxyl radical interception (antioxidant). the conjugate moiety provides parallel functional benefit.
Typically Found In: Brightening,anti-aging,multi-function vitamin c
TECHNICAL DETAILS
Primary Category: Active ingredient โ antioxidant
Secondary Functions: Free radical scavenging,anti-aging
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.1%โ3%
SOURCING & ETHICS
Vegan Status: Yes
Halal Status: Yes
Source Notes: Plant-derived extract or synthetic.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Non-irritating; well-tolerated.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Vitamin c,vitamin e,ferulic acid,spf,other antioxidants
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Vitamin c conjugate activity depends on esterase hydrolysis kinetics โ formulators should verify in-vitro and in-vivo hydrolysis rates for the specific ester to confirm sufficient ascorbic acid release for claimed bioactivity.
Last Verified: 2026-03-22
Primary Sources: Cosing database,ascorbyl carboxydecyl trisiloxane ascorbate conjugate vitamin c review