yes sassy hair,
I did a jazzing semi permanent 2 weeks ago and started the mtg. Now because I'm semipermanent the color still washes out. When you are applying the MTG, wear a silk scarf and place a towel on you pillowcase because the color will run through your scarf. I have a light color satin pillow case and I am glad the Holy Ghost bought that to me to do ahead of time before I ruined it. Girl it's safe and your hair will be fine.