Take control of time with Bio-performance Skin Filler, an inseparable night and day duo serum that harnesses Shiseido's most futuristic technology inspired by aesthetic procedures. Instant filler benefits at home for skin that looks 5 years younger and volumised in just 1 day*. Based on over 30 years of expertise in Hyaluronic Acid, the MolecuShift technology pushes the skin up from within for instant bouncy skin and less visible deep wrinkles. Step 1. Infill Serum Night: Compacted High Molecular Weight Hyaluronic Acid penetrates intensely** the skin while you sleep Step 2. Full Expansion Serum Day: Compacted High Molecular Weight Hyaluronic Acid is expanded back to its original size, pushing up the skin from within for an instant gain in volume For all skin types. Dermatologist-tested. Refills available. *Consumer test on 110 women.**in superior layers of epidermis.