Dark spots, age spots, freckles, liver spots, and sun spots are all forms of hyperpigmentation. Hyperpigmentation is caused when excess melanin in the skin forms deposits in the skin. A huge factor that helps these dark spots appear is too much sun exposure with not enough protection. This is why it is absolutely crucial to always wear an adequate sun protectant during the day. Some brands we carry such as Obagi and SkinMedica focus on the treatment of hyperpigmentation. Check out the Obagi Nu-Derm System or the SkinMedica Lytera line for proven treatment of these unwanted dark spots.