from objectification to visible results
For Yon-Ka, each product must adapt to an essential criterion: gentle efficacy that restores the skin’s natural ability to preserve or regain its balance.
• Efficacy tests are conducted by authorised independent Clinical Expertise laboratories overseen by an investigating doctor. They make it possible to objectify the claimed actions: firming power, anti-wrinkle power, hydrating or exfoliating properties, non-comedogenic status, etc. They are carried out on volunteers as well as cell cultures and human skin explants. These tests on explants make it possible, for example, to demonstrate the anti-glycation, anti-collagenase and anti-elastase action of a product designed to fight against signs of ageing.
The brand’s recent innovations are centered on the choice of patented active ingredients based on the latest scientific research to delay and reduce the appearance of skin ageing, protect the skin from environmental pollution, combat dark spots, etc.