In addition to synthetic dyes, alkaline agents and strong oxidizing agents are also harmful ingredients for people with hair loss. Even though hair coloring processes are often completed within 10-20 minutes, repeated dyeing can still lead to hair loss. Despite the short application time, regular coloring (once a month or every other month) can accumulate damage over time. Therefore, it is advisable to limit hair dyeing frequency.
After dyeing your hair, be sure to wash your hair and scalp thoroughly with shampoo to prevent the dye from remaining on your scalp for an extended period. Also, take extra care to prevent dye from coming into contact with your scalp.