Hyaluronic acid is an important skin care ingredient. It has the functions and effects of diluting dry and fine lines, delaying aging and improving skin hydration. Hyaluronic acid is one of the main components of proteoglycan and intercellular substance in human body. It is a filler in human cells and plays an important role in the morphology and structure of skin. Product Name 4D Hyaluronic Face Serum Shelf Life 3 YEARS Volume Fragrance We can make the fragrance as your request if you have new idea. Services Free samples, LOW MOQ, Fast delivery Sample Free Sample 2-7 days(Delivery charge paid under customer account) Payment methods T/T, Paypal, Alipay