Yon-Ka Le Sérum Excellence Code - 30ml

Noticing that your skin is less resilient, looks tired more quickly and shows fine lines and an uneven tone? According to Yon-Ka, Le Sérum Excellence Code is the brand's most concentrated longevity formula to date: a Nectar d'Exception from the renewed Excellence Code line, built around the Longevity Infusion concept. The serum takes a 360° approach to skin ageing, uniting science with the connection between skin and emotions. Le Sérum succeeds the previous Excellence Code serum.

How it works

Le Sérum works on four fronts. Ethically sourced Alpine willowherb from the Swiss Alps helps reduce the accumulation of senescent, so-called 'zombie' cells that accelerate skin ageing. Peach leaf extract helps stimulate SIRT-1, a key longevity protein that supports skin renewal, giving tired healthy cells fresh energy. A pre- and postbiotic complex helps keep the skin microbiome balanced and supports the skin's natural defences, so skin stays resilient against external aggressors. Finally, the formula targets the skin's sensory receptors, because emotional wellbeing, according to Yon-Ka, is directly linked to youthful-looking skin. The serum is 99.5% of natural origin (ISO 16128).

Texture and where it fits in your routine

The light, nectar-like texture absorbs easily and comes in a patented airless pump that protects the formula. Apply Le Sérum morning and/or evening to cleansed skin, after your Lotion Yon-Ka, and finish with a cream such as La Crème Excellence Code. For the eyes and lips, pair it with Le Contour Excellence Code.

Frequently asked questions

What does 'Longevity Infusion' mean?

It is Yon-Ka's name for the concept behind the renewed Excellence Code line: care that helps skin look healthy, resilient and youthful over the long term.

When will I see results?

In a use test under dermatological control, participants saw results after just 7 days. The full effect builds up with daily use.

Is the serum suitable for sensitive skin?

The use tests included women of all skin types, half of them with sensitive skin. If in doubt, patch test on a small area first.

Le Sérum Excellence Code takes a 360° approach to skin ageing. Alpine willowherb from the Swiss Alps helps reduce the build-up of senescent 'zombie' cells, peach leaf extract helps stimulate the longevity protein SIRT-1 to support skin renewal, and a pre- and postbiotic complex helps keep the skin microbiome balanced and supports the skin's natural defences. The formula also targets the skin's sensory receptors, based on the idea that wellbeing and youthful skin go hand in hand.

Apply a small amount morning and/or evening to cleansed skin, after Lotion Yon-Ka. Spread the serum over face and neck and massage in gently with upward movements until fully absorbed. Finish with your cream, for example La Crème Excellence Code, and use Le Contour for the eyes and lips.

Straight after application skin feels supple and cared for. In a use test under dermatological control with 20 women aged 45 to 70, participants saw results after just 7 days; after 28 days, 80% found their skin firmer and 67% noticed a more even skin tone. With daily use skin looks more resilient, smoother and more radiant.