Does dying your hair damage it?

Does dying your hair damage it?

Dying the hair does not damage it if it's done correctly. Following the manufacturers instructions will prevent any damage from taking place. Hair damage can occur if you ignore the instructions or if you over-process it. Over-processing the hair will lift the outside hair cuticle, allowing the pigment to penetrate the hair shaft. By leaving it there too long or by applying too much heat or something like that, the hair cuticle will not settle down again after colouring. If that is the case, then you have damaged the hair, and the cuticle being lifted will allow the moisture to escape. This will allow the hair itself to become brittle, and it could snap.