Our Hyaluronic Acid serum strengthens skin to help resist signs of aging, while boosting radiance and smoothing fine lines. Formulated with 11kDa Hyaluronic Acid — our smallest form of Hyaluronic Acid, which penetrates 8 skin surface layers deep** — and an Adaptogenic Herbal Complex, our serum neutralizes the effects of external skin-aging stressors for youthful, radiant skin. Benefits: Protects against stressors including sun exposure, pollution, stress, lack of sleep, diet and temperature that can lead to early signs of aging 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 reduces fine lines by 27%* Clinically demonstrated* to double skin's strength** Absorbs easily with a lightweight texture For all skin types, including sensitive skin *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. Usage Tips: Apply our 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. 3.4 oz./ 100 mL