Cuticles are the outer most part of the hair shaft. They are strong and transparent cells that overlap each other up to 12 layers deep. These tiny microscopic structures protect the hair and its inner cell structures from damage. The cuticle is responsible for much of the mechanical strength of the hair fiber. A healthy cuticle is more than just a protective layer, as the cuticle also represents the structure that controls the water content of the fiber. Much of the shine that makes healthy hair so attractive is due to the cuticle. With these in tact, you can treat the hair like its your very own. It can be dyed and chemically processed. We suggest having your hair Professionally serviced to protect your investment.