Lirene Whitening Serum renews the skin's appearance and provides a powerful whitening effect thanks to the 10% acid complex. Product benefits: - Activates cell renewal. - Lightens pigment spots. - Restores and revitalizes the skin. - Lirene Professional does not test products on animals. How it works: Vitamin C slows down the signs of aging, evens out tone and adds radiance. Phytic, almond and glycolic acids exfoliate dead skin cells, stimulate regeneration, make the skin cleaner and brighter. Beauty tips: For best results, use the serum with other Whitening series products: cleansing foam, face creams and eye creams. How to use: Apply 2-3 times a week in the evening to clean, dry skin. Rinse with warm water for 20 minutes or leave overnight and rinse in the morning. Don't forget to protect your skin with a high SPF cream.