Pimples, blackheads and white heads can be extracted.
Do not ever extract pimples. The pressure applied on your skin may extend the inflammation to other areas of the skin, resulting in even more pimples and redness. You can extract blackheads and white heads with an extractor meant for the purpose, but do ensure that the extractor is places at an angle 90 degrees to the surface of the skin.
Extraction of pimples lead to inflammation to other areas of the skin, resulting in even more pimples. so, do not extract the pimples.