Obagi Blender promotes correction in the deeper skin levels for even skin tone. Obagi Nu-Derm Blender is a unique formula to lighten darker skin areas such as freckles, age/sun spots and melasma. When combined with Obagi Nu-Derm Clear (which works at the more superficial skin levels), Obagi Nu-Derm Blender will gradually fade these areas of hyperpigmentation as well as improve overall skin tone. And when used in conjunction withVenustast Ret 2.0, you obtain the added effects of a retinoid.