- Hydrates for 72 hours- For glowing skin and a stronger skin barrier- Suitable for all skin typesNeutrogena® Hydro Boost Ultra-Hydrating Serum with Hyaluronic Acid to boost hydration& Natural Moisturising factors such as Amino Acids & Electrolytes delivers 8x more hydration instantly* & for 72 hours for ultra-hydrated, glowing skin and a stronger skin barrier. This fast-absorbing serum gives a burst of intense, weightless hydration.Designed for all skin types and tones. *as compared to untreated control