Houttuynia Cordata Water

Houttuynia cordata water is an aqueous extract derived from Houttuynia cordata, a plant native to East Asia. It is obtained through water extraction of the plant material, which concentrates its water-soluble bioactive compounds including polyphenols and flavonoids. In cosmetic formulations, it typically serves as a hydrating base and carries the plant's functional properties into the formula.

The ingredient functions primarily as a humectant and skin-conditioning agent, drawing moisture into the skin whilst delivering antioxidant and antimicrobial compounds. It is commonly used at concentrations between 70–88% in formulations, often as a primary hydrating component rather than a trace active.

Houttuynia cordata water delivers its benefits through two main mechanisms. First, its polyphenol and flavonoid content provides antioxidant activity, meaning these compounds can neutralise reactive oxygen species (free radicals) that accumulate from UV exposure, pollution, and natural skin metabolism. This helps protect skin cells from oxidative stress.

Second, the antimicrobial compounds in the extract—particularly volatile components identified in the essential oil profile—appear to inhibit the growth of problematic skin bacteria. Additionally, the extract has demonstrated anti-inflammatory effects in cell studies, suggesting it may help calm reactive skin conditions. As a water-based ingredient, it also serves a straightforward hydrating function by humectancy.

As Houttuynia cordata water is typically used at high concentrations (70–88%), it functions as a hydrating base in formulations rather than a treatment ingredient to layer separately. Use products containing it as directed, morning and evening, as part of your regular routine. It pairs well with other antioxidants and works across most skincare steps. No special application technique is required beyond standard product use.