Give your hair more sun to make it fade quickly: the chemicals contained in the hair dye can accelerate its decomposition under the irradiation of sunlight. Pay attention to face sun protection, only the hair on the head, not for too long, so as not to damage the hair.
Wash your hair frequently: If you want to fade, you can wash your hair frequently, so that the hair dye will fade slowly.
Wash your hair with overheated water: Washing your hair with overheated water can also make the dyed hair fade, but it may hurt your scalp.
Steam your hair with hot steam: You can also steam your hair with hot steam, which will also make your hair fade faster.
Fading agent: If you want to restore your original hair color, you can go to the barber's and ask the barber to apply some fading agent to your hair, or you can let the hair color fade.