2-3 drops of this weightless hydrator provides dehydrated skin the moisture it needs to re-hydrate the acid mantle, to keep the acid mantle balanced. Follow with moisturizer. For all skin types. Unscented. A Skinplicity exclusive. Effective Low Molecular Weight, and made in the USA. A perfect combination with the ultrasound device. 2 oz blue frosted bottle. Also available for 'Back bar' in 4, 8, 16 & 32 oz. bottles.