One of the best selling hyaluronic acid serums in the UK, the Vichy hyaluronic acid booster is formulated with Pure Hyaluronic Acid and 15 Mineral-rich Vichy Volcanic Water to strengthen & repair your skin barrier. It strengthens and repairs the skin barrier, hydrates and plumps the skin, and makes the skin more resistant to visible signs of aging by exposure factors (UV, pollution, stress). It is lightweight, fast-absorbing, and has a calming fragrance. it has been accepted by the National Eczema Association