A Japanese overnight microneedle patch that delivers hyaluronic acid directly into the skin while you sleep. Made by Kose, each patch is covered with 1,500 tiny needles made from 100% crystallized hyaluronic acid. When you apply the patch and go to sleep, those needles dissolve slowly into the stratum corneum, releasing moisture deep into the skin where a regular serum or eye cream cannot reach. One pack contains one pair of patches for a single overnight treatment, suitable for the under-eye area and the nasolabial folds.