Purify your blemish prone troublesome skin with la roche posay serozinc a toning mist enriched with zinc sulphate serozinc is created with just three ingredients water healing zinc sulphate 010 and astringent sodium chloride 075 together these three ingredients target blemishes marks and excess oiliness ensuring your complexion feels fresh and comfortable at any time of day the versatile formula is perfect for use as a toner between cleansing and moisturising or it can be us