Brand from South Korea: TOSOWOONG. Benefits:The coloring shampoo that offers dark coloring effect to gray hair with certified safe ingredients.A Formulation discovered from the principle that polyphenol compounds are oxidized when they come in contact with air, causing a natural browning reaction.2-in-1 shampoo that provides coloring effect and anti-hair loss effect with certified hair loss relief functional ingredients.Dermatology tested, German Dermatest skin hypoallergenic certification.How to use:Take an appropriate amount while your hair is wet, shampoo it to your hair as if you were massaging for about 3 minutes, and wash it with lukewarm water.