Protein- / Keratin-Repair Shampoos 📌 Definition Protein- / Keratin-Repair Shampoos are specialized haircare formulations designed to rebuild, strengthen, and restore damaged hair by replenishing lost structural proteins such as keratin, collagen, silk, or wheat proteins. These shampoos work by depositing hydrolyzed proteins and amino acids onto the hair shaft and/or partially penetrating weakened areas to […]
