Hair Revitalizing Tonic Daily Leave-In Scalp Support For Hair Loss, Thinning, And Lackluster-Looking Hair.A Leave-In Tonic That Revitalizes The Scalp With Caffeine, Zinc, And B Vitamins. Product ProfileDr Brows Hair Loss Tonic Is A Leave-In Scalp Tonic Developed For People Experiencing Hair Shedding, Thinning Hair, Or A Sense Of Imbalance…