Protein on your hair extensions will dehydrate them quickly and prematurely, leading you to dry, brittle hair that becomes unmanageable as well as breakage. This is due to the chemical processing your hair extensions go through before getting to you. This process can melt away your hair's natural hydration barrier, the cuticle. Therefore, protein tends to dehydrate hair on contact. Switching your hair care to protein free products will preserve your hair and prevent damage, as it works to supplement essential daily nutrients.