Our 5-in-1 facial essence contains hyaluronic acid, nicotinamide and vitamin C. It can whiten the skin, fade dark spots, remove wrinkles, resist aging, and increase skin activity. Its usage is simple: after cleansing, wipe dry, take out this product, squeeze an appropriate amount of liquid into the palm or face, evenly apply to the face, gently massage until absorbed. Skin whitening, improving dull yellow skin tone, regulating skin tone uniformity, fading black spots, reducing melanin production, lightening skin spots and acne scars, deeply penetrating and moisturizing the skin, improving dryness, roughness, anti-aging, firming the skin, improving skin laxity, and reducing wrinkles.