A well-designed damaged-hair mask should contain hydrolyzed proteins (keratin, wheat, or silk amino acids), conditioning emulsifiers such as BTMS-50 or behentrimonium chloride, humectants like panthenol and glycerin, and optionally bond-building actives such as maleic acid for post-bleach or relaxer repair. pH should be 4.5–5.5. A qualified cosmetic chemist on AJ Cosmo Labs will select and justify each ingredient against your specific claims and target market.
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