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2 The Use of ColtideTM Radiance in Hair Care Formulations Disclosed by: Croda International PLC Introduction Hair care products have been used to clean and groom hair for many centuries. Recent years have seen the emergence of multifunctional hair care products with claims such as hair smoothing, conditioning, repair, detangling, or colour protection as consumers desire for healthy-looking hair that is shiny, soft, and easy to style. As customers demand more sustainable options for consumer products, formulators are constantly on the lookout for novel sustainable ingredients to be included into hair care formulations without compromising on their function and efficacy. We disclose here applications of a well-established, sustainable biopolymer ingredient, Coltide Radiance and similar technologies as described in patent EP0540357B1, in hair care products which delivers the following benefits: Smoothing Conditioning, including improved detangling, combability, manageability, and hair aesthetics Damage repair Hair fibre protection, including prevention of cuticle lifting, cracking, splitting, abrasion, and breakage Thermal protection Colour protection, including reduced transfer after dye application Easy styl...