Hyaluronic Acid
Hyaluronic acid is a hero skincare ingredient known for its incredible ability to hold up to 1000 times its weight in water. In cosmetics it acts like a moisture magnet, plumping and hydrating skin without any heaviness. You'll find it in everything from serums and moisturisers to sheet masks and lip products.
How it works in skincare
In skincare and cosmetic formulas, hyaluronic acid works by attracting and binding water molecules to the surface of the skin, creating a plump, cushioned appearance and reinforcing the skin’s natural moisture barrier. Different molecular weights are often used together: larger molecules sit on the surface delivering instant hydration and a smoothing effect, while smaller ones penetrate further to support long-term suppleness. It is non-greasy, lightweight and compatible with almost every other ingredient, making it a staple in both daily moisturisers and targeted treatments.
Key benefits
- Intensely hydrates skin
- Visibly plumps fine lines
- Strengthens the moisture barrier
- Improves skin smoothness and softness
- Gives a fresh, dewy finish
- Calms tightness in dry skin
Best for
dry skin, dehydrated skin, mature skin, sensitive skin, normal skin
Where it comes from
Although naturally present in the human body, the hyaluronic acid used in UK cosmetics is produced by fermentation of plant-derived sugars, typically from corn or soy. This creates a pure, vegan-friendly form that is identical to the molecule found in skin.