Our ginger serum contains ginger oil which can promote blood circulation and metabolism of the scalp. This ginger hair serum naturally activates the dormant hair follicle germ tissue on the scalp to promote hair growth and nutrition, make hair healthier, damage-free and reduce shedding. Warnings of scalp oil: 1. For external use only. Avoid contact with eyes. 2. Discontinue use if irritation occurs. 3. Keep out of the reach of children. 4. Store in a cool, dry place.