How does PuriAge Korean 21Days NMN Firming Mask Works? The PuriAge Korean 21Days NMN Firming Mask is known for its lifting effect, as it freezes wrinkles and expression lines. It contains NMN to help reduce the signs of aging, such as fine lines, wrinkles, and sagging skin. It is also readily absorbed by our skin, to hydrate and protect it. When applied to our skin, the collagen content in NMN helps to repair skin damage while reducing wrinkles, scars and other blemishes like pigmentation, black spots, acne and more. Korean PuriAge 21Days NMN Firming Mask restore skin's defenses against moisture loss and dehydration.When key fatty acids in skin's barrier known as ceramides gradually deplete, skin is left vulnerable to all sorts of problems, from persistent patches of dry, flaky skin to increasingly becoming extra-sensitive. NMN has been shown to boost the hydrating ability of moisturizersŻso skin's surface can better resist the moisture loss that leads to recurrent dryness and flaky texture. OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.