Fills - Moisturizes - Strengthens the skin barrier The 3-in-1 serum is a unique and innovative facial care, dermatological and certified BIO. Its fresh, non-sticky gel texture hydrates in just 1 minute¹, plumps and strengthens fragile facial skin thanks to powerful active ingredients: Rhealba® BIO Oat Sap with rebalancing and moisturizing properties, Dandelion extract known for its anti-pollution properties and hyaluronic acid for long-lasting hydration. Tested on allergic skin, free of fragrances and essential oils, and non-comedogenic, its 99% natural-origin formula, certified organic, contains only the essential ingredients to guarantee optimal tolerance, with maximum care for fragile skin. Depending on your skin's needs, Biology Hyalu 3-in-1 Serum can be mixed with your daily cream for personalized care. Perfectly hydrated and protected, skin feels plumper, plumped with a radiant complexion as soon as it's applied. How to use - Using the pipette, put a few drops of Serum 3 in 1 in the palm of your hand. - Warm up the 3 in 1 Serum by rubbing the palms of your hands. - Apply to face and neck. Advice Depending on your skin's needs, the Biology Hyalu 3-in-1 Serum can be combined with your daily cream for a tailor-made treatment for the face, neck and eye area.