Do I need R+F Active Hydration Serum if I am using another R+F moisturizer (e.g., REDEFINE Triple Defense Treatment, REDEFINE Overnight Restorative Cream or SOOTHE Sensitive Skin Treatment)?

Hydration and moisturization address dryness in different way. Hydration adds water to the skin, while moisturization does not actually add water to the skin, but rather forms an occlusive barrier on top of the skin to seal in the moisture that is already there. R+F Active Hydration Serum and its 3D3P Molecular Matrix add continuous hydration to the skin. It has been clinically tested to work synergistically with all R+F Regimens to boost results.