Brand from Japan: PlusKirei. Plus Pure VC25 is a beauty serum that contains a high concentration of pure vitamin C.It moisturizes and alleviates problems such as dullness, pores, and fine lines caused by dryness (efficacy evaluation test completed), leading to clear, firm and lustrous skin.The unique A-PVC (amphiphilic pure vitamin) design does not use any water, and its ability to blend with both water and oil quickly delivers pure vitamin C deep into the skin (stratum corneum) and immediately acts on the target points.How to use:After washing your face, prepare your skin with lotion, etc., and take an appropriate amount (3 to 4 drops for the whole face) onto the palm of your hand and apply to the whole face or areas of concern.