This serum, made with thermal water rich in sulphur and lime, has a keratoplastic effect and enhances the resistance of the skin. It is suitable for acne scars on the face and the back. Since it has a mild drying effect, it should be combined with a moisturizer appropriate for the skin type, when treating scaly seborrhoea. It is highly effective for lichen pilaris, inflamed hair follicles, after waxing or shaving and also for skin problems caused by summer heat. Its effects can be increased by combining with the other members of the Sulphuric product line.