Kiehl's vital skin-strengthening super serum is an advanced facial serum designed to strengthen skin from within and combat visible signs of aging caused by stressors such as pollution, sun, or a hectic lifestyle. Its ultra-light formula penetrates deep into the skin's surface layers, helping to reduce fine lines, restore vitality, and improve skin's resilience. Ideal for all skin types, even the most sensitive, this powerful serum visibly strengthens the skin barrier and leaves skin brighter, smoother, and healthier-looking. Main ingredients hyaluronic acid 11kda known for its high water-binding capacity, this low-molecular-weight hyaluronic acid effectively penetrates the skin's surface layers. Its moisturizing action helps maintain optimal hydration, improving skin elasticity, softness, and comfort. Adaptogenic herbal complex a patented formula that combines traditional ingredients such as red ginseng root, holy basil, and schisandra berry. These adaptogens, widely used in traditional chinese, korean, and ayurvedic medicine, protect the skin from environmental stress and visibly revitalize it. Benefits strengthens the skin from its innermost layers. Helps visibly minimize the effects of aging caused by external agents such as stress, pollution, or solar radiation. Softens expression lines, improves resistance and enhances the skin's natural glow. Light and fast-absorbing texture. Suitable for all skin types, even the most sensitive. Proven results thanks to its deep action, this serum has demonstrated visible results in skin quality and resilience. It improves dullness, restores radiance, and reduces signs of aging caused by the environment and daily stress, leaving the complexion more even, revitalized, and healthy-looking. Instructions for use apply to clean face and neck, both morning and night. It can be used alone or before other serums and/or moisturizers. Avoid contact with eyes. In case of contact, rinse with plenty of water.