Replenish skin with intense hydration with the Stri Vectin Hyaluronic Dual-Response Serum, a two-part formula ideal for dull & dry skin. Infused with a patented NIA-114 complex, the serum is split into two parts which fuse upon application. The first chamber contains six unique forms of Hyaluronic Acid, an ingredient which can hold 1, 000 times its weight in water & which immediately alleviates dryness & discomfort. The second chamber contains a group of potent ceramides to lock in hydration & prevent moisture loss. Melting effortlessly into skin to help smooth the appearance of fine lines & wrinkles & protect against free radical damage, the formula offers both instant & long-term results to create a bright, soothed & youthful complexion. Suitable for dry skin types. Free from parabens & sulphates.