Ingredient
Hydrolyzed Keratin
Positive in 4 products
Scout's take
Enzymatically broken-down keratin protein fragments small enough to penetrate the hair cortex and bind to damaged sites. Genuine repair activity (Wickett 1991), not just superficial coating like silicones.
More from Scout's analyses
Enzymatically broken-down keratin protein fragments small enough to penetrate the hair cortex and bind to damaged sites. Genuine repair activity (Wickett 1991).
from the analysis of TRESemmé Keratin Smooth ConditionerFound in 4 products
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