You need a license to purchase the relaxer from pleasant image
taken from their website:
Nurtru-Therapy Conditioner Relaxer(s)
*For Professional Use Only. License required for purchase. License number must be included in the comment section in order to be shipped. If not provided, this item will automatically deleted from your order and a credit will be issued. Available in 1lb, 4lb, 4 appl. and 16 appl. (econo pack)