Acne and pimple. Black spot
Acne and pimples are skin problems many people deal with. Sometimes, after acne clears up, dark spots remain. These spots are called post-inflammatory hyperpigmentation. They happen when your skin produces too much melanin due to inflammation. To help reduce these spots, keep your skin clean and avoid picking or squeezing pimples. Using products with retinoids, vitamin C, or hydroquinone may gradually lighten the spots. Wear sunscreen to prevent the spots from darkening further.