Hydrolyzed Yeast Protein

Hydrolyzed yeast protein is a complex ingredient that contains several beneficial substances for skin, including complex sugars such as oligosaccharides and polysaccharides, some of which are similar to hyaluronic acid, others are soothing antioxidant beta-glucans. The protein also contains several skin-friendly lipids that contribute to the strength of skin’s barrier and help maintain its resilience.

This ingredient is typically obtained via fermentation using the yeast Saccharomyces cerevisiae. Along with improvements in hydration, barrier, and overall brightness of skin, it’s also been shown to surpass colloidal oatmeal in its ability to reduce itchy skin.

Hydrolyzed yeast protein is most often added to a blend with other water-binding agents that bolster skin’s natural moisturizing factor and help preserve its barrier. Usage levels of such blends range from 1–3%. It is considered safe as used in cosmetics and in fact does not have restrictions on how much can be used in such products.