Read up on washing your hair right to detox it. It can be done with the right procedures. And cut your hair. Not so that its really obvious but even an inch or so can help.
many things to take into account what was actual use? , when is test ? how long is hair ? this tells you if you need treatment or if trimming old dirty history is even possible . the 90 day thing is not as simple as 90 days after you use it still has to grow clean hair . do you have details i mentioned?
