Pimples plague many adolescents and adults, causing uneven skin coloration, pigmentation, scars and even lowered self-esteem. Pimples are formed when hairs, sebum and skin cells group together and form a plug. This forms the ideal breeding ground for bacteria, and soon after, the area becomes swollen or inflamed, and as the plug disintegrates it forms an unattractive pimple. There are many different types of pimples, and the most common types