I believe that you may have sunspots. These are flat brown spots that develop on areas of your skin that are exposed to the sun. They’re also known as liver spots, though they have nothing to do with your liver. Sunspots are harmless. They are noncancerous and don’t pose any risk to your health or require treatment unless you’re looking to remove them for cosmetic reasons.
The spots could possibly also be dead skin cells. These cells are called keratinocytes, and are composed of the fibrous protein keratin. They are formed at the base of the epidermis, and gradually move up through the skin until they reach the outer surface, where they die, forming what is known as the stratum corneum (around 15-20 layers of dead cells). Eventually, the cells at the very top of the strateum corneum break away and fall off the skin, allowing new cells to push up from beneath.
