The Numbuzin No.6 Deep Sleep Mask Serum is a deeply hydrating treatment designed to replenish and soothe dry, dehydrated skin. With 63% Icelandic Glacier Water and a Triple Hyaluronic Complex, this serum penetrates moisture deep into the skin to combat inner dryness and improve texture. It provides 48-hour moisture retention, leaving your skin smooth, supple, and revitalised.