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Our hydrating hyaluronic acid serum is designed to penetrate up to 8 surface layers of the skin*, helping to visibly reduce fine lines and wrinkles while reviving dull, tired-looking skin caused by daily stressors such as pollution, lack of sleep, and environmental aggressors. Powered by 11kDa Hyaluronic Acid, our smallest form of hyaluronic acid, this advanced hyaluronic acid serum delivers deep hydration where skin needs it most, restoring plumpness and resilience from within. Enriched with a potent Adaptogenic Herbal Complex, it strengthens the skin’s barrier while neutralizing external stressors that accelerate visible aging. The result is skin that looks smoother, healthier, and more radiant, with improved resistance against future damage.
*Based on a clinical study of 25 panelists measuring penetration of the full formula via tape stripping.
Strengthens skin from within its deepest surface layer
Helps correct visible signs of aging, which can be caused by skin stressors including pollution, stress and sun exposure
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. Our Hyaluronic Acid is also renewable and sustainably sourced.
*Stratum corneum
ADAPTOGENIC HERBAL COMPLEX
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.
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
Did You Know
Did You Know?
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 stressed skin for a radiant, healthy-looking appearance.
*Based on a 4-week clinical study on 58 subjects tested in urban and polluted environments.
**Strength Index based on a composite, average score of clinically graded parameters after using the product for 4 weeks vs one week of use.
Our best face cream uniquely formulated for all skin types.
Old priceNew priceS$ 69.00
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What it is and what it's good for
Frequently Asked Questions
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When to use Kiehl's Vital Skin-Strengthening Hyaluronic Acid Super Serum?
Use the serum twice daily, morning and evening, on clean skin. Apply before moisturizer to help strengthen the skin barrier, smooth fine lines, and boost hydration for healthier, more resilient skin.
Can you use Kiehl's Vital Skin-Strengthening Hyaluronic Acid Super Serum and Vitamin C serum together?
Yes, they complement each other well. Apply Vitamin C serum first to target brightness and antioxidant protection, then follow with the Vital Skin-Strengthening Hyaluronic Acid Super Serum to deeply hydrate and reinforce the skin barrier.
What does Kiehl's Vital Skin-Strengthening Hyaluronic Acid Super Serum do?
This potent serum penetrates up to 8 surface layers deep to target early signs of aging, visibly diminishing fine lines and reviving dull, tired-looking skin. Formulated with 11kDa Hyaluronic Acid and a proprietary Adaptogenic Herbal Complex, it helps neutralize skin-aging stressors while strengthening the skin barrier for renewed radiance and resilience.
Is Kiehl's Vital Skin-Strengthening Hyaluronic Acid Super Serum suitable for sensitive skin?
Yes, this lightweight, dermatologist-tested serum is suitable for all skin types, including sensitive, oily, and combination skin. Its gentle formula strengthens the skin barrier while providing deep hydration, making it a versatile addition to any skincare routine.
How long does it take to see results from Kiehl's Vital Skin-Strengthening Hyaluronic Acid Super Serum?
Many users notice improved hydration and smoother texture within the first week. With consistent use, visible improvements in skin strength, radiance, and resilience appear in about 4 weeks.
