Can Dying My Hair Lead to Hair Loss?
Hair dyes use chemicals to bond the new color to your hair (both externally and internally) and that means your hair must be penetrated by the chemicals. There is a difference between dying your hair darker or lighter. Going darker tends to do less damage to your hair follicles, whereas the peroxide used to go lighter can be more destructive to your hair follicles.
Ultimately, coloring your hair will not cause hair loss because your hair is already dead! Once your hair grows past the follicle it is dead and no longer growing. Growth occurs from underneath your scalp where the hair is alive beneath the skin’s surface. This is also where the root of hair loss can result. Your hair bulb can be affected by chemicals or hormones in your blood which can result in hair loss. However, since dying your hair only affects the hair on the surface, it does not result in hair loss.
Hair color contains chemicals that can damage your hair follicles as well as your scalp and could cause hair loss if used incorrectly or over-used.
If you feel that your hair is getting damaged by your hair dye, try an ammonia-free option. Ammonia is used to make it easier for the dye to seep into your hair, but it can also strip hair of natural nutrients which in turn weakens the hair.