The Retinol-Like Bi-Serum by Yon-Ka is a next-generation anti-aging serum featuring an innovative two-phase formula. It is designed to visibly reduce the signs of skin aging while offering excellent skin tolerance.

At the heart of the formula is the exclusive [RE]NEW technology, combining two advanced active ingredients with retinol-like benefits. These help stimulate the skin’s natural renewal processes, visibly improve skin texture and support skin regeneration – without the typical irritation associated with traditional retinol products.

The bi-phase texture combines a nourishing oil phase with a highly concentrated active phase. When applied, both phases blend into a silky emulsion that absorbs quickly and leaves the skin feeling smooth, soft and comfortable.

• Biomimetic microalgae derived from biotechnology stimulate cellular activity and support skin regeneration.
• A plant-derived mastic extract strengthens the skin’s retinoid mechanisms and protects the natural renewal process.

This combination helps promote the formation of new skin cells, improves skin texture and visibly smooths the complexion. The formula is made with 99.8 % ingredients of natural origin and delivers effective anti-aging benefits with excellent skin tolerance.

Clinical tests and user studies demonstrate visible improvements in skin quality:
• 92 % report smoother, softer skin
• skin texture appears up to 2 times more refined
• 9 out of 10 users notice refined pores
• effective on 100 % of wrinkle types tested
• 8 out of 10 users report younger-looking skin

With regular use, the skin appears visibly renewed, smoother, more radiant and refined:
• activates natural skin renewal
• visibly smooths lines and wrinkles
• refines pores and skin texture
• improves skin quality and radiance
• retinol-like effect without typical irritation
• dermatologically tested and suitable for sensitive skin

Suitable for
• mature skin with lines and wrinkles
• tired and dull skin
• uneven skin texture and enlarged pores
• skin lacking elasticity
• also suitable for sensitive skin

Application
Shake well before use to mix both phases.
Apply 6–8 drops into the palms of your hands and gently massage onto the face and neck. The serum can be used morning and/or evening on cleansed skin, alone or before your regular moisturizer.