Quercus Mongolica Leaf Extract

Quercus mongolica leaf extract comes from the leaves of a tree native to East Asia, where it has been used in traditional Korean, Chinese and Mongolian medicine for inflammatory skin and mucosal conditions. The extract contains several bioactive phenolic compounds, most notably pedunculagin, which appear responsible for its skin-conditioning properties.In skincare formulations, this ingredient functions as a skin conditioner, meaning it works to improve skin texture and appearance rather than acting as a preservative or emulsifier.

The extract's main active compound, pedunculagin, works through two primary mechanisms relevant to acne. First, it inhibits the production of inflammatory markers (IL-6 and IL-8) that drive acne-related inflammation. Second, it blocks 5α-reductase, an enzyme involved in hormonal regulation within the skin, which may help reduce sebum production.For photoaging concerns, the phenolic compounds in the extract appear to inhibit matrix metalloproteinase-1 (MMP-1), an enzyme that breaks down collagen when skin is exposed to UV radiation. By limiting MMP-1 activity, the extract may help preserve s…

This ingredient is typically incorporated into serums, essences or moisturisers. Since it is a conditioning agent rather than an active that requires specific timing, it can be used as part of your regular routine. If combining with other targeted treatments (such as vitamin C or retinoids), introduce them gradually to monitor your skin's response.

Quercus mongolica leaf extract is generally well-tolerated in cosmetic formulations. As with any plant extract, those with known sensitivity to oak species or phenolic compounds should patch-test before use.