Age spots are really sun spots, a record of ultraviolet exposure, which is why they appear on the face, backs of the hands, chest and forearms while skin that has spent its life under clothing stays clear.
Ultraviolet stimulates melanocytes to produce pigment as a protective response. Over decades, some of those cells become permanently overactive and deposit pigment in defined patches. The clinical name is solar lentigo, and the everyday names, age spots, liver spots and sun spots, all describe the same thing.
Here is the good news. Unlike melasma, which is hormonally driven and chronic, sun damage responds quickly to treatment and tends to stay gone provided you protect the skin afterwards. Discrete spots often clear substantially in one or two laser sessions.
Regents Park Aesthetics checks every lesion closely before treating, and points you to a dermatologist wherever a second look is wise, so every spot treated is ready to treat.