Kerazyne MB, developed by Inolex, is described as an advanced multifunctional conditioning polymer designed for various personal care applications. With innovative mechanisms and an enhanced sustainability profile, it is designed to offer a versatile alternative to conventional conditioning agents in hair and skin care formulations.
Mechanisms Behind Kerazyne MB
Kerazyne MB is a polyesteramine that, per Inolex, provides hair conditioning through multiple mechanisms. Non-quat cationic sites are attracted to anionically charged hair fibers; ester linkages provide secondary attractive forces to hair fibers; and an alkyl group provides a protective, conditioning layer once bound to hair. Per the company, the combined effects result in the emolliency and gloss characteristics of an ester and adhesion properties comparable to traditional amines.
Inolex adds that in cleansing applications, polyesteramines interact with surfactant molecules and reduce the interaction of individual surfactant molecules with the skin's lipid bilayers. The result is a reduction in skin irritation during cleansing.
Kerazyne MB: Key Formulating Features
Kerazyne MB (INCI: Polyester-11) offers a range of functional and formulation advantages suitable for professional-grade cleansers, scalp care and conditioning formulations. These include:
- Enhanced formula mildness: Minimizing surfactant skin penetration without reducing cleansing effectiveness or foam performance, ensuring a milder formulation;
- Static control and conditioning: Effectively reducing static charge in hair care, offering smooth and manageable strands;
- Sustainable profile: Providing an alternative to traditional polyquaternium and amodimethicone chemistries, meeting eco-conscious formulation needs;
- Micellar thickening: Delivering excellent thickening properties and enhancing product consistency, while also creating a clean rinse with soft, silky feel; and
- Cold processing: Offering formulators a pourable liquid suitable for cold processing and clear formulations, simplifying manufacturing.
Standards, Certifications and Specifications
Kerazyne MB is readily biodegradable, halal certified, RSPO mass balance certified, and clean beauty preferred. It is also China IECIC listed, vegan and cruelty free, and kosher compliant. Recommended at use levels of 0.5-2.0%, the ingredient is added to the oil phase or premix with amphoteric surfactant, then added into the surfactant system with mixing; a pH < 6.5 is required.
Broad Applications Across Categories
Kerazyne MB is designed to perform across multiple personal care categories, including:
- Hair care products such as conditioners, treatments and styling solutions,
- Cleansers for both body and scalp, and
- Skin care and body care formulations.
