XL-SILK™

sr-polypeptide-168 oligopeptide-178. XL-SILK™ by Bolt Threads features a unique high molecular weight design that allows it to function as both a barrier and a carrier, providing dual benefits for your skin and hair. As a biodegradable film former, it combines the hydrating and scaffolding properties of silk, effectively defending against pollutants while maintaining optimal hydration. This results in healthier, softer, and smoother skin and hair, making it the superior choice for innovative, high-performance personal care products.

• A vegan keratin alternative that smooths the hair cuticle and improves pollution wash off.
• Shown to improve curl retention, hair diameter, & wet combing while providing anti-frizz styling benefits.
• A biodegradable film former to enhance skin barrier health.
• It is microbiome friendly and offers long-lasting wear, a soft dry down, and antioxidation properties in skin.
• It shows improvement in skin firmness and elasticity, reduction in the appearance of fine lines and wrinkles, and improved overall healthy appearance.
• It can easily and cost-effectively formulate ultra soft, silky and smooth products that are vegan and microplastic-free, with neutral odor and color.
• It is stable, bio-based, cruelty-free, biocompatible and meets all safety and regulatory requirements, including the EU & China.
• XL-SILK™ is recommended for use in hair care, cleansers, skin care, SPF and color cosmetics.
• It is produced through fermentation and white biotechnology.