Kiehl's Since 1851

Kiehl's Since 1851 Vital Skin Strengthening Hyaluronic Acid Super Serum


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A Hyaluronic Acid serum with an Adaptogenic complex that strengthens skin and boosts radiance.

This Hyaluronic Acid serum strengthens skin to help resist signs of aging while boosting radiance and smoothing fine lines. Formulated with 11kDa Hyaluronic Acid (Kiehl's smallest form of Hyaluronic Acid, which penetrates 8 skin surface layers deep**), and an Adaptogenic Herbal Complex, this serum neutralizes the effects of external skin-aging stressors for youthful, radiant skin.

  • Helps correct visible signs of aging, which can be caused by skin stressors including pollution, stress, and sun exposure
  • Clinically shown to improve skin texture by 41%*
  • Clinically demonstrated to boost radiance by 29% and improve resilience by 38% for glowing, healthy-looking skin*
  • Clinically demonstrated to visibly reduce fine lines by 27%*
  • Clinically demonstrated* to double skin’s strength**
  • Absorbs easily with a lightweight texture
  • For all skin types, including sensitive skin


    Size: 1.0fl oz / 30 ml

    *Based on a 4-week clinical study on 58 subjects tested in urban and polluted environments.

    **Based on Strength Index = Composite, average score of clinically graded parameters after using the product for 4 weeks vs one week of use.

    • Apply the Hyaluronic Acid serum onto cleansed face and neck, morning and night
    • Can also be used before another serum
    • Then apply a daily moisturizer
    • Avoid contact with eyes
    • If contact occurs, rinse thoroughly with water

    Aqua / Water, Dimethicone, Glycerin, Alcohol Denat., Hamamelis Virginiana Water / Witch Hazel Water, Propanediol, Phenoxyethanol, Tocopherol, Ammonium Polyacryloyldimethyl Taurate, Schisandra Chinensis Fruit Extract, Capryloyl Salicylic Acid, Caprylyl Glycol, Xanthan Gum, Peg-60 Hydrogenated Castor Oil, Panax Ginseng Root Extract, Sodium Acetylated Hyaluronate, Peg-20 Methyl Glucose Sesquistearate, Disodium Edta, Ocimum Sanctum Leaf Extract, Citrus Aurantium Dulcis Peel Oil / Orange Peel Oil, Limonene, Adenosine, Sodium Hydroxide, Methyldihydrojasmonate, Citric Acid, Eugenol, Sodium Benzoate, Pelargonium Graveolens Flower Oil, Citral, Potassium Sorbate, Lavandula Angustifolia Oil / Lavender Oil, Cymbopogon Schoenanthus Oil, Citronellol, Linalool, Geraniol, Rosmarinus Officinalis Leaf Oil / Rosemary Leaf Oil.