
Bi-Serum Retinol-Like
Biomimetic anti-aging serum
Biomimetic microalga · Mastic · 100% natural origin
The retinol effect, without the retinoid. Biomimetic microalgae and a mastic tree extract reproduce the action of retinol, 100% of natural origin and without the usual irritation.
The portrait of a next-generation active, at the heart of the Bi-Serum.
Discover the Bi-SerumRetinol has been the most studied anti-aging active since the 1970s, but its effectiveness comes at a price: irritation, sun sensitivity, and incompatibility with pregnancy.
In the 2010s, biotech research took on a challenge: reproducing retinol's effect on skin gene expression without its drawbacks. Microalgae grown in bioreactors, able to produce targeted signal molecules, opened the way to these so-called "biomimetic" alternatives.
Yon-Ka launched its Bi-Serum Retinol-Like to offer this action 100% of natural origin, with no compromise on comfort.
Classic retinol works by binding to specific nuclear receptors that activate skin renewal genes, a powerful mechanism that often triggers an irritating adjustment phase. Retinol-like actives aim to activate similar pathways through other, biomimetic mechanisms that are considered better tolerated.
The signature active of the Bi-Serum, our most advanced anti-aging treatment, 100% of natural origin, for a "retinol" effect without a retinoid.
We believe in biomimetic innovation rather than raw concentration. The Bi-Serum delivers the anti-aging results sought by customers used to retinol, without the trade-offs of irritation or photosensitivity.
The science of the active, the sensoriality of the plant.
The two-phase format is mixed just before application; follow the instructions on the bottle.
Well tolerated, including by skin usually sensitive to retinol. As with any active anti-aging treatment, ask your healthcare professional if you are pregnant or breastfeeding.
The Yon-Ka formula where the retinol-like complex is the signature active.
The Phyto-Aromatic
Skincare Experience