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CAPRYLYL 3-GLYCERYL ASCORBATE.

Valuable CAS 1120360-26-0 / ANTIOXIDANT, HUMECTANT

An advanced, amphiphilic Vitamin C derivative engineered for superior stability and deep epidermal penetration. This multi-tasking molecule stabilizes pure L-ascorbic acid by etherifying it with glycerin and a caprylyl group, allowing it to navigate both water and lipid layers of the skin barrier efficiently.

Antioxidant Skin Brightening Anti-Acne Humectant Collagen Booster

Science

This derivative operates through a four-fold pathway: it suppresses tyrosinase activity to interrupt melanin synthesis, neutralizes reactive oxygen species (ROS) as a potent antioxidant, triggers fibroblast proliferation to reinforce the collagen matrix, and exerts targeted antibacterial pressure on Cutibacterium acnes by disrupting microbial lipid metabolism.


Research

High confidence
Effective range 0.1–1%
Optimal

0.5%

Key findings

  1. 01 A human clinical trial demonstrated that a 0.1% concentration significantly improved acne vulgaris, hyperpigmentation, and fine lines within 30 days of daily use.
  2. 02 In vitro assays showed melanin inhibition potential comparable to hydroquinone and superior to arbutin at concentrations as low as 30 μM.
  3. 03 Fibroblast studies confirmed dose-dependent stimulation of collagen and elastin production across a 10-300 μM range.

Transparency

Commonly dusted
Min. effective
0.1%
Red flag below
0.05%

Because this ingredient is clinically effective at remarkably low concentrations (0.1%), it is frequently 'dusted' into formulations at negligible levels purely for marketing claims. Efficacy requires at least 0.1% for measurable physiological change.


The Formula

Solubility
Both
Optimal pH 4 – 7
0 7 14

Stability

Exhibits exceptional resistance to oxidation and discoloration compared to traditional L-ascorbic acid; remains stable in aqueous solutions without the typical yellowing effect.

Synergies

  • Ferulic Acid
  • Vitamin E
  • Niacinamide

Conflicts

  • Strong oxidizing agents
  • High pH environments above 7.5

Safety

CIR Status
Not reviewed
Pregnancy
Safe
Sensitization risk Low

Validated safe via Human Repeat Insult Patch Tests (RIPT) and ocular irritation assays; non-genotoxic and non-sensitizing at standard cosmetic levels.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

A high-performance Vitamin C variant that excels in treating acne-prone and pigmented skin due to its unique amphiphilic penetration and stability.


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