
Le Sérum
Global anti-aging serum
Hyaluronic acid · White lupine · Alpine willowherb
The flower of the high peaks. Growing on scree and freshly disturbed ground, willowherb is traditionally known for its soothing, rebalancing action on sensitized mature skin.
The portrait of a pioneer flower, at the heart of Le Sérum – Excellence Code.
Discover Le Sérum – Excellence CodeAfter a forest fire or a rockslide, willowherb is often the first plant to cover the bare ground, hence its English nickname, fireweed.
This ability to settle on weakened ground and stabilize it inspired its traditional use in European herbal medicine, to soothe irritated tissue. Cosmetic research then turned to its polyphenols for their antioxidant potential on mature skin1.
Yon-Ka chose it for Le Sérum in the Excellence Code line, alongside hyaluronic acid and white lupine.
With age, skin sometimes becomes more reactive to temperature changes, cosmetics or stress. Traditionally soothing extracts like willowherb help calm this hyper-reactivity without weighing down the formula2.
One of the actives of the Excellence Code line, paired with hyaluronic acid and white lupine in Le Sérum for global, soothing anti-aging action.
The Excellence Code line pairs highly technical actives, like hyaluronic acid and lupine peptides, with more discreet plant extracts like willowherb, which soothe the skin while it restructures.
The science of the active, the sensoriality of the plant.
A stable extract; close your bottle tightly after use.
Well tolerated when applied topically, with no known contraindications, including during pregnancy.
The Yon-Ka formula where willowherb is one of the key actives.
The Phyto-Aromatic
Skincare Experience