Science
Mechanism of Action
Upon topical application, Ascorbyl Glucoside penetrates the skin and is enzymatically hydrolyzed by alpha-glucosidase, slowly releasing active L-ascorbic acid. This controlled conversion creates a 'reservoir effect,' extending its beneficial actions. The released L-ascorbic acid neutralizes harmful free radicals, protecting skin from oxidative stress. It also stimulates collagen production, contributing to improved skin elasticity and reduced appearance of fine lines. Furthermore, it inhibits melanin synthesis by suppressing tyrosinase activity, leading to a more even and brighter skin tone, while also possessing anti-inflammatory properties to soothe irritation. Some evidence suggests direct protective effects against oxidative stress-induced cell damage.
Research
Clinical Evidence
Medium confidence2-5% for targeted brightening
Key findings
- 01 Demonstrates significant antioxidant activity, effectively neutralizing damage from environmental aggressors.
- 02 Effectively brightens dull skin and helps diminish the appearance of hyperpigmentation.
- 03 Stimulated collagen synthesis in cultured human skin fibroblasts.
- 04 Suppressed UVB-induced cytotoxicity in cultured HaCaT human keratinocytes, indicating protective effects.
- 05 Achieved significant reduction in pigmentation scores in Japanese women with solar lentigines over 12-24 weeks, though numerical values were not disclosed.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Highly stable across a pH range of 5-7, maintaining integrity even at temperatures up to 100°C, with optimal stability observed at pH 6.4 and 55.3°C. For maximum cosmetic product stability and to prevent discoloration, formulations should be protected from light and heat, with a pH adjusted to 6.5-6.8. The inclusion of metal chelating agents or additional antioxidants can further enhance stability. A 1% citrate buffer is recommended to mitigate pH drift. Avoid prolonged exposure to highly acidic (pH 2-4) or alkaline (pH 9-12) conditions.
Synergies
- Metal chelating agents
- Other antioxidants
Conflicts
- Benzoyl Peroxide (leads to oxidation of Vitamin C)
- Exfoliating acids (AHAs/BHAs) (alternating use is recommended to prevent potential irritation and maintain efficacy)
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that Ascorbyl Glucoside (and Sodium Ascorbyl Glucoside) is safe for use in cosmetics. The highest reported maximum use concentration for leave-on formulations is 5% for face and neck products, and 2% for rinse-off products. It is important to note that while 'PALMITOYL ASCORBYL GLUCOSIDE' was the requested ingredient, research data predominantly identifies 'Ascorbyl Glucoside' (a water-soluble derivative of Vitamin C) as the active compound. All safety information provided within this profile, including concentration limits and sensitization risk, refers to Ascorbyl Glucoside.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Ascorbyl Glucoside, a highly stable and well-researched vitamin C derivative, is a valuable ingredient for comprehensive skin health, providing antioxidant defense, brightening, and collagen support for all skin types. Please note that the detailed efficacy and safety data provided herein pertains to Ascorbyl Glucoside, as 'PALMITOYL ASCORBYL GLUCOSIDE' is not a widely recognized INCI name in the available scientific literature.
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