Herbal Medicine- Hair-Skin-Body -Nails 101

Hi Hair Growth family! I did the seven day challenge and 14 days later I do feel some itching. I think I did the first day incorrectly. I just did a regular shampoo and conditioner, heat protectant leave-in and serum to blow-dry and flat iron. I am not certain how to do the scientific brushing. Did I miss any thing? I did not exfoliate. I have no problem with starting all over. Please help and thank you in advance! 😀