First, you need to wash your hair, and then apply the hair mask evenly to your hair. When applying it, apply it to the hair shaft 5 cm away from the hair root, and then wrap the hair with plastic wrap or shower cap. This can prevent the hot air on the scalp surface from losing too fast, because higher temperature is beneficial to the hair to absorb nutrients. After 5- 10 minutes, emulsify the hair mask with a little water, and then clean it thoroughly.
Because of the use of chemicals, straight hair is very harmful to hair quality. This is why you should take good care of your hair after dyeing. If you don't take good care of it, you can't do it: to use shampoo with separate washing and care, it is best to use essence as conditioner. Do a hair mask once a week or two, not in a beauty salon. Buy a hair mask and do it at home without steaming.
Also, you should not wash your hair too often. Washing your hair every day will make your hair lack nutrition and break easily. You should wash it every two or three days. Don't bother to do your hair and don't comb it too hard. Don't dye your hair and perm at the same time, at least every six months. Don't dye your hair and perm all the time, it's not impossible, but there should be a certain time interval to give your hair time to recover. After dyeing, you should always do hair mask and other care to restore the luster of your hair.