Science
Mechanism of Action
Horse fat's efficacy is largely attributed to its substantial content (60-65%) of unsaturated fatty acids, such as oleic, palmitoleic, linoleic (omega-6), and alpha-linolenic (omega-3) acids. This fatty acid profile closely mirrors that of human sebum, ensuring efficient dermal absorption and integration. It functions as an emollient by forming a thin, protective membrane on the skin's surface, which effectively reduces transepidermal water loss and reinforces the skin's natural moisture barrier against external aggressors. Linoleic acid contributes to skin moisturization and reduces inflammatory mediators, while alpha-linolenic acid provides anti-inflammatory effects. Palmitoleic acid supports skin injury healing. The presence of vitamins E and F further enhances skin metabolism, offers antioxidant protection, helps mitigate inflammation, and aids in the reduction of dark spots, fine lines, and acne marks. Moreover, horse fat is reported to promote collagen synthesis, crucial for skin elasticity, and exhibits anti-bactericidal, anti-pruritic properties, potentially absorbing UVB radiation and neutralizing reactive oxygen species.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 A cream containing 95.8% horse fat, alongside 4% hydroxy stearic acid and lauroyl sodium alkyl amino-propionate, and 0.2% essence, demonstrated excellent moisturizing and repairing capabilities. It was found suitable for full-body application, functioned as a makeup primer, and provided benefits such as spot inhibition, dermatitis relief, scald treatment, sterilization, acne elimination, and pustule treatment. This formulation was deemed harmless to the skin and suitable for sensitive skin, pregnant women, and babies.
- 02 A facial oil with a 99% concentration of high-quality horse oil proved effective for dry and acne-prone skin, with observations noting its full absorption despite an initial slightly oily sensation.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Horse fat, also known as horse oil, exhibits variable consistency from liquid to solid based on ambient temperature, which necessitates careful formulation. For stable cosmetic products, it is often incorporated into emulsions. Horse oil-in-water emulsions, specifically those stabilized with an HLB value of 11 or 12 and 15-20% surfactant concentration, have shown stability over 15 days at 40°C. To ensure cosmetic acceptability, purification methods, such as supercritical fluid extraction with deodorants, are vital for removing its characteristic undesirable odors.
Safety
Safety Profile
While formal safety assessments by bodies like CIR, SCCS, or FDA are not explicitly documented, horse oil is generally regarded as a natural skincare ingredient with low risks of sensitization and irritation. Formulations containing up to 95.8% horse fat are claimed to be harmless to the skin and suitable for all ages, including infants, pregnant women, and individuals with sensitive skin, suggesting a broad safety profile.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Horse fat is a valuable lipid-rich ingredient, offering comprehensive moisturizing, barrier-repairing, and anti-inflammatory benefits across various skin types, including dry and sensitive, despite its medium comedogenicity rating.
Related
Similar Ingredients
Finding similar ingredients…