Capryloyl Glycine is a functional lipo-amino acid that restores the skin’s acidic mantle while inhibiting the growth of undesirable bacteria and yeast. It is primarily utilized in formulations targeting acne, dandruff, and body odor due to its dual sebum-regulating and antimicrobial properties.
- INCI Name:
- Capryloyl Glycine
- Chemical/Scientific Name:
- N-(1-oxooctyl)glycine
- Common Aliases:
- Lipoglycine, Octanoylglycine
| Category: | Active Substances |
| Source Origin: | Synthetic (derived from glycine and caprylic acid) |
| Comedogenic Rating: | 0 |
| Primary Industries: | Dermatological Skincare, Personal Hygiene, Haircare |
| Solubility: | Soluble in alcohol and oils; water-dispersible when neutralized |
At a Glance: Properties & Effects
| Sebum Control: | |
| Antimicrobial Efficacy: | |
| Barrier Repair: | |
| Irritation Risk: |
- Primary Benefits: Suppresses 5-alpha reductase to reduce oiliness, restores skin pH, limits blemish-causing bacteria, and prevents dandruff-causing yeast proliferation.
- Potential Risks: Extremely low risk of sensitization; typically well-tolerated across all skin types.
Biological Action & Cosmetic Profile
Structural composition involves the covalent bonding of the amino acid Glycine to a caprylic fatty acid chain. This amphiphilic nature allows the molecule to integrate effectively into the lipid layers of the skin. By delivering Glycine directly to the epidermis, the ingredient supports the skin’s natural moisturizing factor (NMF) and structural integrity.Maintaining an acidic surface pH remains critical for a healthy skin barrier. Capryloyl Glycine acts as an “acid mantle restorer,” helping to shift the skin’s surface toward a pH of 5.5. This acidification creates a hostile environment for pathogenic microorganisms like Staphylococcus aureus and Propionibacterium acnes while favoring beneficial flora. Furthermore, research suggests the molecule inhibits 5-alpha reductase, the enzyme responsible for stimulating sebaceous glands, thereby reducing excess oil production.Antimicrobial properties extend to the management of Malassezia yeast, which is implicated in seborrheic dermatitis and dandruff. By disrupting the cell membranes of these microbes, the ingredient reduces flaking and itching without the harshness associated with traditional antifungal agents. Its multifunctionality often allows formulators to reduce the concentration of conventional preservatives in a product, as it acts as a “preservative booster” by lowering the overall microbial load.
Broader Applications & Origins
Formulators frequently employ this lipo-amino acid in deodorants because it targets the bacteria responsible for converting sweat into malodorous compounds. Unlike aluminum salts, it does not block sweat glands but instead addresses the biological source of odor. In haircare, its presence in scalp treatments helps balance oiliness and soothe irritation.Synthetically produced for high purity, the ingredient often utilizes plant-derived fatty acids from coconut or palm oil. This hybrid nature makes it a popular choice for “clean beauty” formulations seeking performance-driven results with a favorable safety profile. Its stability across a range of temperatures and resistance to oxidation ensures long-term efficacy in complex emulsions.
Routine Integration
- Synergies: Works exceptionally well with Salicylic Acid for treating acne, as they target both pore congestion and bacterial colonization. It also pairs effectively with Zinc Pca to maximize sebum suppression and Niacinamide for overall pore refinement and barrier support.
Clinical Consensus & Safety
Dermatological safety assessments by the Cosmetic Ingredient Review (CIR) Expert Panel have categorized Capryloyl Glycine as safe for use in cosmetic products. Clinical studies indicate that even at concentrations up to 2%, the ingredient exhibits negligible irritation or sensitization potential. Because it is a derivative of a naturally occurring amino acid already present in the human body, it is recognized as highly biocompatible. Toxicological data confirms it is non-mutagenic and poses no significant risk of systemic toxicity when applied topically.
Is Capryloyl Glycine effective for fungal acne?
Yes, its ability to inhibit the growth of Malassezia yeast makes it a valuable ingredient for managing fungal acne (pityrosporum folliculitis) and seborrheic dermatitis.
Does this ingredient cause skin purging?
No, it does not increase cell turnover in the same manner as retinoids or hydroxy acids, so it is unlikely to cause a purging response.
Can I use it with Vitamin C?
There are no known contraindications. Since this ingredient helps stabilize the skin’s acidic pH, it may actually complement the performance of L-ascorbic acid, which requires a low pH for optimal penetration.