Serum with salicylic acid effectively eliminates blackheads and supports the fight against acne. Cleanses pores, gently exfoliates dead skin and limits excessive sebum production. Contains niacinamide, which supports skin regeneration, smoothes the complexion and evens out its color. Thanks to PHA acids, it prevents the formation of wrinkles and slows down the skin aging process. Application: Apply a small amount in the evening to cleansed face, neck and décolletage. Massage gently. Wash off after an hour or in the morning. Do not use with other preparations containing retinol, vitamin C and AHA, BHA and PHA acids. Avoid contact with eyes. During the treatment, it is necessary to use creams with SPF50 filter during the day and avoid exposure to UV radiation. Do not use during pregnancy or breastfeeding. Keep out of reach of children. Product for external use. Before first use, perform an allergy test. Discontinue use if adverse reactions occur.