Prick the white part of the pimple very lightly with the tip of your needle
Mix groundnut oil with an equal amtount of fresh lime juice and apply on face. leave for 10-15 minutes and wash. It may be applied daily to prevent formation of blackheads, acne and pimples.
Garlic has well known antibiotic properties making it an excellent treatment for pimples and acne. Peel and mash eight cloves of fresh garlic and apply to face avoiding the area around the eyes. Leave on for about 15 minutes and wash off with a warm cloth.
A mask of grated apple mixed with a little honey is an excellent remedy for pimples. Most facial masks can be applied to the skin for 15-20 minutes then washed off with warm water, followed by a cold rinse.

A few handy tips for those who suffer from pimple 'attacks'.

To avoid transferring bacteria and germs, clean your pillowcase, washcloths, towels, make-up brushes and applicators frequently.
The Pimple affected parts must be thoroughly cleaned and wiped with a soft towel.
Eat lots of fruits and vegetables and drink lots of water.
Fuller's earth (multani mitti) pack is an effective means to control pimples.

from : http://www.beauty-cosmetic-guide.com/pimple-home-remedy.htm