Description:Mados Acne Treatment Serum is indicated to reduce the appearance of skin blemishes and congestion. A high concentration of 10% of this vitamin is supported in the formula by the zinc salt of pyrrolidone carboxylic acid to balance the visible aspects of sebaceous activity.Contraindications: In case of topical application of vitamin C ( L-ascorbic acid and/or ethylated L-ascorbic acid) is used as part of skin care, it should be used alternately with this formula (ideally vitamin C in the evening and this formula in the morning). Otherwise, niacinamide may compromise the integrity of vitamin C. Directions: Apply to the entire face morning and evening before thicker creams. If irritation occurs, discontinue use and consult a doctor. Use only as directed on intact skin. It is recommended to perform a skin test before use. Keep out of reach of children. Ingredients: Aqua (Water), Niacinamide, Pentylene Glycol, Zinc PCA, Dimethyl Isosorbide, Tamarindus Indica Seed Gum, Xanthan gum, Isoceteth-20, Ethoxydiglycol , Phenoxyethanol, Chlorphenesin. All Mados products can be found at the following link.