How effective is this on African American women faces?

Hi there! Flash Mask is suitable for all skin types and tones! Flash Mask is a powerful Glycolic acid-based resurfacing mask that exfoliates and evens skin tone. Use Flash Mask 1-3 times a week. Apply for 10-15 minutes and then rinse thoroughly with water. Avoid Flash Mask on the nights you use a retinoid salicylic acid or other exfoliant. Patch test before use!