Hyaluronidase Inhibition

Most anti-aging skincare tries to put hyaluronic acid into the skin from outside — serums, injections, supplements. Peat does something different: it protects the hyaluronic acid your skin already makes.

Your skin naturally produces hyaluronic acid, a molecule that holds up to 1,000 times its weight in water. It’s the reason young skin looks plump, stays hydrated, and bounces back. But your body also produces hyaluronidase — enzymes that continuously break hyaluronic acid down. As you age, this breakdown accelerates while production slows. The result: drier, thinner, less elastic skin.

How it works

Humic acids inhibit hyaluronidase enzymes, slowing the degradation of your skin’s own hyaluronic acid. Think of it as turning down the drain rather than running the tap harder. Instead of adding more hyaluronic acid from outside (the serum approach), peat helps what’s already there last longer.

The result is that the skin’s natural moisture reservoir persists — improving hydration, elasticity, and volume from within rather than from a topical layer that sits on the surface and evaporates.

Why it matters

This mechanism is central to peat’s relevance for skin aging. It also connects to dry skin — preserving hyaluronic acid means less transepidermal water loss and better hydration retention between treatments.

In an Estonian face mask trial, participants reported smoother, softer skin with reduced wrinkles after a 10-day course. Hyaluronidase inhibition by humic acids (citing Efert 2018) was identified as one of the mechanisms driving these results.

What makes this mechanism distinctive is that it works at the enzyme level — deeper than surface moisturising, which addresses hydration through physical means (humectants, emollients, occlusives). Hyaluronidase inhibition is a biochemical intervention that changes how quickly your skin loses its own moisture-holding capacity.

What the evidence says

The evidence is preliminary but compelling. The hyaluronidase inhibition mechanism is referenced in Estonian research literature (Hinn 2026, citing Efert 2018), and the clinical observations of improved skin hydration and elasticity are consistent with this pathway. However, dedicated in-vitro hyaluronidase inhibition assays using purified humic acid fractions from peat have not yet been published. This is a strong candidate for targeted laboratory research — the experiment is straightforward and the result would be highly valuable for the field.