Will hair turn yellow after fading? Not necessarily. Some colors that need to be rinsed and dyed may fade to yellow after a long time, but dyed black will not fade to yellow.

Will hair turn yellow after fading?

is not necessarily. Some colors that need to be rinsed and dyed may fade to yellow after a long time, but dyed black will not fade to yellow. If you don't want to fade into yellow quickly after dyeing your hair, you need to be careful not to wash your hair every day, because after dyeing your hair, washing your hair every day will accelerate the dryness of your hair; the water temperature for washing your hair should not be too high, because too high water temperature will cause the pigment to be lost very quickly; avoid long-term sun exposure, because sun exposure is also one of the causes of pigment loss.

Which one is more harmful, hair dyeing or hair replenishing root

Both are as harmful. Frequent hair dyeing and replenishing hair can easily make hair dry, broken and very easy to get knotted. The chronic irritation of hair dye may cause inflammation of the scalp and hair follicles, causing hair follicles to shrink, hair from thick to thin, and then fall off; it may also cause skin diseases, which may cause itch, redness, swollen, and pain in the early stage. If scratched, it will easily cause bacterial infection, and in severe cases, it may also cause poisoning.