Kiehls Vital Skin Strengthening Serum

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A skin-strengthening serum that helps protect against skin-aging stressors and visibly correct signs of aging.

Our skin-strengthening serum penetrates skin 8 surface layers deep* to help correct signs of aging through visibly diminishing fine lines and reviving tired-looking, dull skin, which can be caused by skin-aging stressors. Formulated with 11kDa Hyaluronic Acid - our smallest form of Hyaluronic Acid - and a proprietary Adaptogenic Herbal Complex, our potent "super serum" deeply penetrates skin's surface layers** and neutralizes skin-aging stressors to visibly renew skin.
*Based on a clinical study of 25 panelists measuring the penetration of the full formula via tape stripping.
**Stratum corneum layers.

Strengthens skin from within its deepest surface layer Protects against stressors including sun exposure, pollution, stress, lack of sleep, diet and temperature that can lead to early signs of aging Visibly reduces fine lines, improves resilience and boosts radiance for glowing, healthy-looking skin Absorbs easily with a lightweight texture For all skin types, including sensitive skin

11kDa HYALURONIC ACID: Our smallest molecular size of Hyaluronic Acid, this micronized ingredient penetrates to fortify skin within its deepest surface layers.* By delivering skin-strengthening hydration to skin's most vulnerable layer, 11kDa Hyaluronic Acid helps better retain moisture for improved resiliency, suppleness and bounce.
*Stratum corneum

Our Adaptogenic Herbal Complex is a proprietary blend of adaptogens - Red Ginseng Root, Holy Basil and Schisandra Berry - traditionally used in Traditional Chinese, Korean and Ayurvedic Medicine. Within our formula, these adaptogens work synergistically to defend skin from stressors while renewing and resurfacing skin's texture for a smooth, radiant appearance.

Every day your skin comes into contact with stressors that can all lead to premature skin aging. UV exposure, pollution and extreme temperatures along with tobacco, stress, lack of sleep and nutrition can all have negative impacts on your skin and cause dullness, dryness, dehydration, fine lines and other signs of aging. Our formula is clinically demonstrated* to double skin's strength** to help protect against the stress-related signs of aging to help keep your skin more radiant and healthy-looking.
*Based on a 4-week clinical study on 58 subjects tested in urban and polluted environments.
**Based on Skin Strength Index = Composite average score of skin suppleness, plumpness and resiliency.
  • 30ml
  • Apply skin-strengthening serum onto cleansed face and neck, morning and night
  • Can be used under another serum and-or moisturizer
  • Avoid contact with eyes. If contact occurs, rinse thoroughly with water

Small items purchased online can be returned to any of our physical stores, or you can use the returns sticker included with your order to return it by post free of charge. For large items please call us on 0800 327 637.

If the item is faulty or damaged we will meet our obligations under the Consumer Guarantees Act. If you are returning the item because you've changed your mind and the item is in its original condition, then we will exchange the item (physical stores only) or give you a gift card. We do not allow returns for beds, furniture, whiteware and electronics unless the goods are faulty.

Read our full return policy here
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