The Miracle of Hyaluronic Acid

If there's one ingredient almost every skincare fan has heard of, it's hyaluronic acid. But what does it actually do — and how do you pick a product that uses it well? Here's the short, no-nonsense version.

What is hyaluronic acid?

Hyaluronic acid (HA) is a natural substance found in our own bodies. As we get older, both the quantity and the quality of our HA decline, so it helps to replenish it from the outside. What makes it special is its ability to bind water — up to a thousand times its own weight. That's not a small amount at all!

High vs. low molecular weight: how to choose

Hyaluronic acid comes in high molecular weight and low molecular weight forms — simply put, the molecules differ in size.

High molecular weight is used mainly as a filler in pharmacy and aesthetic medicine. In cosmetics it occasionally appears too, where it helps protect the skin from the outside.
Low molecular weight matters more in skincare: its smaller molecules can penetrate deeper into the skin layers, so it can hydrate below the surface — not just on top of it.

Mini FAQ

Does hyaluronic acid suit all skin types?
It's a gentle, naturally occurring substance, so most skin types tolerate it well — including sensitive and oily skin.

Which form should I look for in skincare?
Low molecular weight HA is the one designed to hydrate deeper skin layers; high molecular weight mainly helps protect the surface.