Tonic stimulates stem cells Containing a special formula of melanin stimulating solution that has been developed and certified by hair scientists to restore gray hair to its original state. With ingredients that stimulate Stem Cell, it helps stimulate cells in the hair roots to work again, increase hair volume and maintain hair pigment, making hair thicker, stronger and healthier from the inside out with extracts such as Multi-Peptide Complex, Multi-Molecular Weight Hyaluronic Acid, SOD Antioxidant Complex, Alpha Glucosyl Hesperidin, Etc.