Pimples technically called Acne vulgaris is the most common type of acne cause mostly by five main factors: excess sebum (oil) , hormones, dead cells, Propionibacterium acnes ( a bacteria that causes acne lives on the skin) and inflammatory response. Acne emergies from a point which requires 2_3 weeks to take a defined form of pimples. This process happens deep under your skin. Pores are little holes present on your skin. These pores are actually air follicles containing very fine hair. Each hair follicle is connected to a sebaceous gland. The sebaceous gland produces an oily substance called sebum. Sebum helps in keeping the skin soft. This sebum reduces the surface of the skin through the hair follicle. The hair follicle is lined cells called keratinocytes. Now , during puberty, a hormone present both in males and females increases. This sebum hair and keratinocytes fill and plug the hair follicle. Plugging of the follicle is the earliest sign of acne . Because the follicle is plugged, sebum can not reach the surface of the skin . This means that the follicles is filled with oil ( sebum) and cells ( keratinocytes) . A mixture of both these causes Propionibacterium acnes on the skin to grow in the plugged follicle. This bacteria in the plugged follicle, induces the white blood cells to attack it. When the white blood cell attacks, they cause the skin to inflame (swell) which is referred to as pimples or acne. In due course of time, the wall of the hair follicle break down spilling everything that is sebum, dead cell and bacteria on the nearby skin.
Natural treatment involve prevention of the cause such as avoiding the use of body care products that contains excessive oil, eating healthy and natural foods especially rich fibre foods, avoiding pressing the pimples to prevent further spread. Many herbs has been scientifically proven to be effective for the treatment of pimples. Few examples are: tulsi leaves, neem leaves, castor oil, coconut oil, onion bulb, turmeric, etc. Most of the above herbs also contains antimicrobial properties .