How Much Does Lush Hair Salon Cost How Long To Wait After Using Lush Henna Before Using Chemical Dyes?

How long to wait after using lush henna before using chemical dyes? - how much does lush hair salon cost

I dyed my hair, hair color brown with a lot of shit a little more than a month now want a change and I want my hair has been dyed or highlighted in a room, it is safe or should I wait longer? (How is it sufficient?)