Herbal Glo Scalp Formula is based on a blend of essential oils & mineral (from plants, roots & leaves) used in East African tribal rituals. They were unknowingly using "nature's secret" resulting in thicker, fuller, healthier looking hair. Scientifically formulated Herbal Glo Scalp Formula is now the most advanced solution for thinning hair. Herbal Glo's Scalp Formula is so easy to use; Simply massage into the scalp and leave on overnight. Use Herbal Glo's Scalp Formula for 4 weeks for thicker hair.