2. When applying hair dye, don't comb it with a comb to avoid scraping off the applied dye paste. You should apply a lot of hair dye cream to places where white hair is concentrated. While waiting, observe whether the white hair is stained at any time. ?
3, ordinary hair dyeing can stop for 30 minutes, while dyeing white hair takes 40-50 minutes. Because the skin of white hair is thick, it is difficult for pigment to enter, so it takes longer to ensure the perfect effect of hair dyeing.
Extended data
Matters needing attention in dyeing hair
1, don't dye your hair just because it's difficult to dye.
If you want to dye a hair color that is very different from before, you must not do it at home without authorization. Instead, you should first ask the hair stylists who often cooperate, listen to their professional opinions, see if it really suits this color, and then go home and think about it carefully before dyeing.
2. Too many colors before dyeing
When you start dyeing, you can have a transition color, or change from the dark color of the same color to the light color of the same color, but you can ask the stylist to add some highlights for you, especially to brighten the angel halo above your head, so the effect will be more obvious.
3. Make a hair mask before dyeing your hair
About a month before you plan to dye your hair, you should start to do a deep care mask once a week to increase the toughness and nutrition of your hair and make healthy hair better colored.
4, dyeing for many times
The freshly dyed hair is very fragile. When blowing, blow dry with low-grade hot air, because overheated temperature will lead to the rapid loss of pigment, or you can use some color-protecting hair cream after dyeing, apply it to wet hair, and then blow dry your hair.
Step 5 Use ammonia-free hair dye
If there is an important party or meeting, don't dye your hair before it, or the new color may make you and your colleagues feel uncomfortable.
6. Don't dye your hair before important activities.
If you want to make dark hair lighter, you can dye it several times and gradually reduce the color in about half a year to minimize the damage.
7, low-grade hair blowing
Using ammonia-free hair dye can fill the color of hair conveniently and quickly, but the harm is much less.