Science
Mechanism of Action
Cocoyl Sarcosine operates primarily as a surfactant and cleansing agent, enabling the emulsification and removal of oils and impurities. Beyond its purifying action, it functions as a skin and hair conditioning agent, enhancing texture and feel. On the epidermis, it helps establish a mesh-like structure that actively retards moisture loss, promoting hydration and softness. Furthermore, this ingredient exhibits the capacity to enhance the transdermal penetration of other cosmetic actives. The sarcosine derivative can modulate sebum production by inhibiting the 5-alpha-reductase enzyme, leading to reduced oiliness, minimized pore appearance, and a mattifying effect. It can also be metabolized into glycine, a crucial amino acid for natural moisturizing factors and collagen synthesis.
Research
Clinical Evidence
Medium confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Cocoyl Sarcosine, in its acidic form, may precipitate below a pH of 5.0, forming an insoluble second phase. Optimal solubility and stability in aqueous formulations are typically maintained above this pH. Related sarcosinate salts exhibit favorable performance and surface tension characteristics within a neutral to slightly alkaline pH range of 5.5 to 9.0.
Synergies
- Enhanced penetration of other active ingredients
Conflicts
- N-nitroso compounds (due to potential formation of N-nitrososarcosine, a known carcinogen)
- Ingredients whose safety is predicated on minimal dermal absorption (due to Cocoyl Sarcosine's penetration-enhancing properties)
Safety
Safety Profile
The CIR Expert Panel considers Cocoyl Sarcosine safe for rinse-off applications and for leave-on products up to a maximum concentration of 5%. Formulations must be meticulously developed to be non-irritating. It is critical to avoid its use in products where N-nitroso compounds could form, as sarcosine has the potential to nitrosate into N-nitrososarcosine, a known animal carcinogen. Data supporting safety for products with inhalation risk is currently insufficient. Cocoyl Sarcosine is compliant with European Union Cosmetics Regulation.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Cocoyl Sarcosine is a valuable, multifunctional ingredient that offers effective cleansing, skin conditioning, and hydration, along with potential sebum-regulating benefits, making it suitable for a wide range of precision skincare formulations.
Related
Similar Ingredients
Finding similar ingredients…