World's most effective and cheapest acne spot treatment: one un-coated aspirin tablet + 4 drops of water. Mash up using your finger and apply to problem spots. Wait a few minutes and rinse off. Works wonders at reducing redness and swelling and speeding the recovery of painful zits and pimples. Can also be used on entire face as a mask to reduce pore size and prevent acne. Gonna have to try this!