Brand from South Korea: numbuzin. This bundle set comes with:No. 6 Deep Sleep Mask Serum 50ml x 2 pcsBenefits:Offers intensive moisturizing and firming effects of mask sheets to treat extremely dry, flaky, dull skin.Improves the skin condition overnight to ensure a revitalized complexion for the next morning.Hydrates the skin from the inside out with Glacier Water instead of Purified Water, restores radiance and firmness of the skin at once.Its highly concentrated watery texture forms a moisture barrier on the skin and leaves a non-sticky finish.Each number of serum represents the answer to solve your skin problem.How to use:1. Pump 2-3 times of the product and apply it on the entire face.2. For optimal results, apply a little amount for the first layer and add another layer afterwards.