Black Marks After Pimple. Have a look at these remedies that can be used to remove pimple marks. It would seem that for some people and it appears to be random in terms of age of unset the inflammatory response is so strong that it accidently damages the melanocytes cells that control the pigmentation of your skin resulting in the dark spots that remain after the pimple is gone and the inflammation subsides.

It is antibacterial and anti-inflammatory. Glycolic or lactic acid will be used. Black spots on skin caused by acne scars Any type of skin acne such as papules cysts nodules and pustules can also damage the skin to develop black dots after healing and scarring.
Mix the two ingredients to get a consistent paste.
The scars begin to disappear by doing this regularly. Very dark skin growths that are usually harmless like skin tags or normal moles but can sometimes be the start of skin cancer. The black spots are a result of scarred skin tissue. I would suggest to avoid pinching them in future.