Hyaluronic Acid, Explained: Why Your Skin Loves It

Hyaluronic acid shows up on the label of almost every serum, cream, and "glow" product on the shelf. The name sounds harsh — acid — but it's one of the gentlest, most universally useful ingredients in skincare. Here's what it actually does.

It's already in your body

Hyaluronic acid (HA) is a molecule your skin makes naturally. Its superpower is water: a single gram can hold up to a thousand times its weight in moisture. That's why it's described as a humectant — it draws water into the skin and holds it there, keeping the surface plump, smooth, and bouncy. We produce less of it as we age, which is part of why skin can start to look drier and less firm over time.

What it does when you apply it

Topical HA tops up what your skin is missing. The immediate payoff is hydration: skin looks plumper, fine lines from dryness soften, and everything you apply afterward tends to sit better. It suits virtually every skin type — oily, dry, sensitive, mature — because it's hydrating without being heavy or greasy.

It's the backbone of our Renewal Serum, a lightweight, quick-absorbing layer of hydration that primes skin for everything after. You'll also find it working alongside other actives in our Moisturising Day Cream and our Calming Eye Cream.

The one mistake to avoid

Because HA pulls in water, it needs water to pull from. In very dry air, applied to bone-dry skin, it can actually draw moisture out of deeper layers. The fix is simple: apply hyaluronic acid to slightly damp skin, then seal it in with a moisturiser on top. That's the whole trick to making it work.

How to layer it

A simple, effective order: cleanse, apply your HA serum while skin is still a little damp, then follow with a day cream to lock everything in. In the morning, finish with SPF. It's a two-to-three step routine that takes under a minute and does most of the heavy lifting for hydrated, healthy-looking skin.

Want to build the routine? Start with the Renewal Serum and Day Cream →

This article is for general education and isn't medical advice. If you have a specific skin condition, check with a dermatologist.