Go to the 'Acne Treatments' tab in the top bar and scroll to 'The spot treatment', this should give you some guidance

Hey Namyo!

If you don't like the chemicals and medication you can also use a hot moist tea bag (preferably black or dandelion tea) on the pimple for around ten minutes to kill bacteria (the tanic acid), or some aloe Vera gel over a day to bring it to a head. Once it gets to a head, you can pop it and put aloevera straight back on for healing, or (my recommendation), keep on using aloevera until the white head gets soft enough to just fall off itself.

Aloevera is great for healing and fighting those one spot pimples in particular!