Hair Cuticles are most important to take care of,
Hair cuticles are very thin tiny protective shields and pointed to same direction.,
its extremely important to take care of them, as long as you have your cuticles healthy so your hair is strong and live.
Hair cuticles can not be seen by eyes, its so tiny so you need a special electornic microscope in order to see your hair cuticles,
Hair cuticles are the most important thing when you are buying a hair extenison, healthy hair cuticles pointed to same direction guarantees you tangle free, and easy washing/drying your hair extensions.
EasternHAIR LAB shows you a 2500 times larger picture of human hair and the hair cuticles, see tiny white shields on hair: