Embellish your skin with the Kiehl's Vital Skin-Strengthening Super Serum. The lightweight formula utilises low molecular Hyaluronic Acid to promote the illusion of a plumper-looking complexion.A boost of glycerin works to drench your skin in moisture, deeply* hydrating for long-lasting softness. Herbal adaptogens, such as red ginseng root and holy basil, help to brighten the appearance of tired skin.The look of fine lines are minimised, while the serum assists with defending against external aggressors. *Based on a clinical study of 25 panellists measuring the penetration of the full formula via tape stripping. **Stratum corneum layers.