After 30 years of research by experts
1. Recommended for small area hair growth (buy 3 get 2 free) 5 treatments.
2. Recommended for medium area hair growth (buy 5 get 5 free) 10 treatments to improve the scalp environment.
3. For large areas of hair growth, we strongly recommend 22 treatments (buy 10 get 12 for free) to promote healthy hair growth.