Many hydrating products may simply cover up dryness. The experts at Neutrogena
have developed a new generation moisturizer designed to work beneath the
skin's surface to actually treat the root cause of dryness: Continuous Hydration.
Formulated with an ingredient that penetrates nine layers deep, Continuous
Hydration is clinically proven to improve the look of aged skin within 24 hours.

Why You Get Dry Skin
A key component of your body's natural mechanism to keep skin hydrated is
called the lipid bilayer. When a rupture occurs in the lipid bilayer, large
aqueous channels form in the skin, allowing excessive natural moisture
to escape, which then leads to dry, parched skin.

To effectively rebalance moisture from within, Continuous Hydration is
formulated to do two things: 1) deliver moisture to the surface of the
skin, and 2) improve skin's own natural ability to draw up moisture
to the stratum corneum. (See diagram below.)