Brand from Japan: PlusKirei. A highly concentrated vitamin C serum containing more than 29% pure vitamin C.This high concentration design delivers vitamin C deeper and deeper into the skin, allowing you to feel the benefits of vitamin C even more.Have succeeded in blending vitamin C, which is very delicate and fragile, in a pure form at a high concentration of more than 29%.Vitamin C not only improves skin texture and firmness, but also moisturizes aging skin, leading to beautiful skin.This one product works seamlessly on skin troubled by dry fine lines and lack of firmness, bringing firmness to the skin.The unique A-PVC design is amphiphilic, allowing pure vitamin C to penetrate straight through skin cells and penetrate deep into the skin.It also provides a full-fledged approach to skin damage deep in the stratum corneum.How to use:After washing your face, prepare your skin with lotion, etc., and take an appropriate amount onto your palm and apply it to your entire face or to areas of concern.