How about dyeing your hair in cold weather?

It takes a long time to dye your hair in cold weather. You can also heat it for a while. ?

relevant information

1, when dyeing your hair in winter, it takes at least two hours to dye your hair because of the low temperature in winter. It only takes one hour to dye your hair in summer. In winter, only hair oxidants dyed for a long time can be absorbed by hair. Therefore, dyeing hair in winter is one hour later than in summer because of the climate.

The longer you stay in dark color, the darker the color. The longer the light color is dyed, the lighter the color is. At the same time, the factors that affect hair coloring are temperature, hair quality and time. The optimum temperature for dyeing hair is 25℃. If the temperature is high, the time should be reduced, if the temperature is low, the time should be increased. The better the hair, the harder it is to color and the longer it takes. The worse the hair quality, the better the color and the shorter the time.

3. Lighten your hair after dyeing it. First, accelerate natural fading. You can often wash your hair with alkaline shampoo, and hair dryer and ultraviolet radiation will accelerate the fading phenomenon. Second, you can use hydrogen peroxide. Too strong concentration of hydrogen peroxide will fade. For example, if 9% or more hydrogen peroxide is used to cover white hair, the dyed color will be lighter than the target color.