Hydra No. 1 Serum

Hydra No. 1 Serum

SKU: 25244

Comfort dehydrated skin with this long-lasting hydrating serum that prevents visible signs of aging caused by dehydration.

Enriched with a double dose of hyaluronic acid light, imperata cylindrica grass, and aloe vera, this creamy and refreshing gel is quickly absorbed and seeps deep into pores, making it the perfect emergency remedy for very dehydrated skin.

It intensifies the effects of Hydra N°1 Crème and is great for mature skin.

The skin is softer and suppler; its glow restored, it appears smoother and re-plumped.

Dermatological Tests



*Tests: corneometric testing over an 8 hour period.
SERUM + CREME:instant and significant hydrating effect: +144% over 8 hours.
SERUM + FLUIDE:instant and significant hydrating effect: +122% over 8 hours.

In the morning and/or evening,
After cleansing and spraying on Lotion Yon-Ka,
Apply the serum (pump 2 or 3 times) to the face and neck,
Then Hydra N°1 Crème for dry or sensitive skin or Hydra N°1 Fluide for normal to oily skin.

In addition, use Masque N°1 once or twice a week.

95% natural ingredients

• Imperata cylindrica, polysaccharides rich in fructose, aloe vera, serine, sodium PCA, vegetable glycerin: instant & long-lasting hydration
• Olive phytosqualane: anti-dehydration
• Yeast extract, hyaluronic acid, silicon: restructuring - redensifying action
• Vitamins E, C, A: anti-oxidant - regenerating
• Essential oils of rose, chamomile and jasmine: balancing and relaxing phyto-aromatic effects.

Water, Squalane, Polyglyceryl-3 Methylglucose Distearate, Imperata Cylindrica (Red Baron) Root Extract, Glycerin, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Sodium Pca, Dimethicone, Serine, Aloe Barbadensis Leaf Juice, Tocopheryl Acetate (Vit. E: 0.2%), Ascorbyl Tetraisopalmitate (Vit. C), Pichia Anomala Extract, Retinyl Palmitate (Vit. A), Biosaccharide Gum-1, Hyaluronic Acid, Jasminum Sambac (Jasmine) Oil, Rosa Damascena (Rose) Flower Oil, Anthemis Nobilis (Chamomille) Flower Oil, Silanetriol, Sorbic Acid, Citric Acid, Polysorbate 80, Carbomer, Caprylyl Glycol, Isohexadecane, Ethylhexylglycerin, Phenoxyethanol, Fragrance/Parfum, Chlorphenesin, Butylene Gyclol, Linalool *, Geraniol *, Citronellol *
*Natural Components of Essential Oils

*Ingredients may be subject to change. The most accurate and up to date product ingredient list can also found on the product packaging.

Yon-Ka… These two syllables form a whole that is greater than the sum of its parts. "Yon" is the river of living, purifying water, and sounds similar to "ion," particle of energy. "Ka" is the eternal part of every being according to Egyptian mythology. Yon and Ka unites what seems contradictory: knowledge and mystery, science and nature, movement and rest, shadows and light. Together they form a symbol of constant regeneration and newfound harmony.

Created in 1954, pioneer in the realm of phytoaromatic treatments and rich with international experience, Yon-Ka provides your skin with the most precious part of plants: their revitalizing essential oils full of solar energy and complementary active ingredients - vitamins, fruit acids, polyphenols, peptides, oligoelements... - Synergy which acts with precision, kindness and effectiveness for the specific needs of the most demanding skin types.

In the heart of Yon-Ka products and treatments, is "Quintessence." The exclusive formula combines 5 essential oils with extraordinary powers - lavender, geranium, rosemary, cypress, thyme - a treat for the senses which reinforces the effectiveness of the natural active ingredients from plants from all over the world.