Hyaluronic Acid: The active ingredient against skin ageing.

Thehyaluronic acid is naturally found in the body. It is predominantly produced by the fibroblasts of the dermis, but the epidermal cells also synthesise it. The dermis contains 50% of the total hyaluronic acid present in the body. Thanks to its remarkable moisturising properties, this molecule acts like a sponge and retains water; it thus ensures the hydration of the skin and gives it its plump and bouncy appearance.

Over the years, not only does its content decrease but its quality also changes. Each decade, we lose approximately 6% of hyaluronic acid. Thus, by the age of 50, the stock of hyaluronic acid would have halved. This drastic drop in hyaluronic acid leads to an atrophy of the fat pockets located deep in the dermis, which is responsible for the appearance of wrinkles and fine lines on the skin's surface.

When injected, hyaluronic acid helps to fill in wrinkles and restores a smooth appearance to the skin. However, if you wish to use a less invasive method, this active ingredient, when contained in cosmetic treatments, is also very effective in combating the signs of ageing.

Replenishing and hydrating, hyaluronic acid is among the favoured active ingredients used to fill wrinkles and reduce signs of ageing. Its mode of action varies depending on its size:

• High molecular weight hyaluronic acid:

  As its name suggests, this molecule is too large to penetrate deeply into the skin barrier. Therefore, it acts on the surface of the epidermis and forms a protective veil against external aggressions and dehydration. Incorporated into a facial care product, this form of hyaluronic acid helps to hydrate the superficial layers of the skin and to diminish the appearance of wrinkles and fine lines caused by expression and dehydration. It is particularly recommended for adding freshness to the complexion.

• Low molecular weight hyaluronic acid:

  Conversely, low molecular weight hyaluronic acid is a micro-molecule that penetrates deeply into the skin. It infiltrates the layers of the epidermis where it captures and gels water for a plumping effect on the surface and maximum hydration. It boosts its own production by fibroblasts. It helps to reduce existing wrinkles and prevents skin ageing.

Our hydrating serum formulated with 3% hyaluronic acid is an ultra-concentrated formula to be applied morning and evening to erase wrinkles and tone the skin.

Combined with aloe vera for comprehensive moisturising action, the hydrating toner helps to balance the skin's pH following cleansing/makeup removal stages and reduces dehydration fine lines.

The nourishing face cream is enriched with lipid-replenishing and moisturising actives and is composed of 98% natural origin ingredients. It restores suppleness to the skin and reduces the appearance of fine expression lines.

• GHERSETICH I. & al. Hyaluronic acid in intrinsic skin ageing. International Journal of Dermatology (1994).

• MICHELOTTI A. & al. Anti-ageing and filling efficacy of six types of hyaluronic acid-based dermo-cosmetic treatment: double-blind, randomised clinical trial of efficacy and safety. Journal of Cosmetic Dermatology (2014).