Freckles are small brown spots usually found on the face and arms , and are not a health threat. They are more often seen in the summer, especially among light-skinned people and people with light or red hair.
Freckles are just skin cells that contain a pigment (color) called "melanin" Melanin is a chemical made by skin cells called "Melanocytes" Melanin helps to protect the skin from the Sun's harmful ultraviolet rays by reflecting or absorbing them. Freckles are triggered by exposure to sunlight.
SUNSPOTS are spots on the skin that are darker than your natural skin tone. Essentially, sunspots are skin damage caused by exposure to the ultraviolet rays of the sun. The sunspots usually appear in areas regularly exposed to sunlight like the face, hands, shoulders, and arms. Sunspots (also known as liver spots) are those little dark spots that can often be mistaken for freckles.
If you're prone to freckles, you're more likely to have them the more you expose yourself to the sun. If you spend time outside without sun protection, you'll probably notice the spots on your skin getting darker and multiplying.