Xanthelasma

Xanthelasmas are benign growths, consisted of cholesterol, that mostly appear on the face, especially upper eyelids. They can merge and form xanthomas. Xanthelasmas are neither harmful to the skin, nor painful. Xanthelasmas may cause due to poor metabolism, diabetes, obesity, thyroid disorders. Both men and women are affected, but the problem is more common in females of middle age. 
The most common and effective way to remove xanthelasmas is Co2 laser treatment. Xanthelasmas can come back after the treatment, so besides removal, a proper diagnostics and correction of lipids level in blood should be performed to prevent it. If you have xanthelasmas, see your dermatologist.