AHA/BHA Clarifying Treatment Toner

AHA/BHA Clarifying Treatment Toner by COSRX is catalogued as a skincare product. Active ingredients can be effective and irritating at the same time, which is why the usual advice is to introduce one at a time. Patch test on the inner arm or along the jaw first, especially if you are already using retinoids, acids or vitamin C. A discounted listing is only a saving if it is the same size and edition as the one beside it. Keep the lid closed and the pack out of direct sun — light and air degrade most actives faster than time does. The cheapest listing is not automatically the best deal: delivery and any code applied at checkout decide that.