Hyaluronic Acid Hydrogel Sheet Mask

This skincare product is Hyaluronic Acid Hydrogel Sheet Mask by Oh K!. Active ingredients can be effective and irritating at the same time, which is why the usual advice is to introduce one at a time. Start with a small amount every other day and build up frequency once your skin has settled. Whether it is discounted this week says more about the shop's stock than about the product. Keep the lid closed and the pack out of direct sun — light and air degrade most actives faster than time does. Whoever is cheapest today may not be tomorrow, so it is worth looking again before settling on the best deal.