Protein is what gives the hair its strength and structure. Hair is about 70% keratin protein by nature. Proteins serve different functions and roles in hair care. Some enhance elasticity, while others reduce it. These proteins bind to the hair cuticle and help temporarily rebuild any weakened areas. Protein-based products reinforce the hair shaft, and it help it remain strong enough to fight breakage. Here is a great test...and the link to the article is below- it is the easiest way to explain/understand- your hair and protein!
Wet Assessment Hair Breakage Break Down
If your hair: