Our Black Acanthosis Care Spray Contains Nicotinamide, Vitamin C, Hyaluronic Acid. It Can Penetrate Deep into the Skin, Decompose Excess Melanin, Nourish the Skin, Reduce Inflammation and Improve Overall Health. Its Usage Is Simple: 1. Clean and Dry the Infected Skin; 2. Shake the Spray Well, and Then Spray the Spray Evenly on the Skin; 3. Gently Massage until Absorbed; 4. Use Twice a Day, the Effect Is Better. Black Acanthosis Care Spray Is Your Secret Weapon to Restore the Natural Beauty of Your Skin. Targeted and Effective Ingredients Aimed at Reducing Skin Thickness and Blackness in Problem Areas, Such as Neck, Lips, Areola, Nipples, Armpits/Armpits, Knees and Elbows.