It is always easier to stop emerging of a pimple at the very beginning that is before it actually emerged. On the first sign of a pimple emerging apply ice on the very spot.
In order to prevent pimples keep your face cleaned. You can use mild facial wash without chemical overload.
If your face is washed you can try applying an Aspirin on your pimple.
You can strengthen the effect of Aspirin if you add a honey to a water where you dissolved four uncoated Aspirins. Apply the mask on your face and keep it for 15 minutes. Rinse with lukewarm water thoroughly.
Since honey has anti-septic properties you can apply it directly on your pimple and leave overnight.
Toothpaste can be used in the same way.
Clearasil stick is also very effective on drying the pimple, but it will probably need longer than a night to do the work.
Clearasil Ultra Rapid Action Treatment Cream is even more powerful. If it does not cure pimple overnight it will at least make it look less visible.
Clear & Clear Advantage Acne Spot Treatment is said to relieve pimples after single treatment. It eliminates the oil and penetrates your acne in no time killing bacteria in it.
Neutrogena Rapid Clear Fight & Fade 2-In-1 Gel is another solution that can help treating your pimple. It is said that it needs eight hours to destroy your pimple.
If you have tried eliminating your pimple over night and you have not succeeded it is not the end of a world. You can always put some make up on it and mask it. There are certain concealers that have anti-bacterial properties and will at the same time cover your pimple and dry it too. Consult your professional cosmetician on which one to choose.
In order to conceal your pimple the best way you can do is to dry it out and apply a product that has benzoyl peroxide or salicylic acid. You can then use a cotton swab to apply eye drops on your blemish. After that apply the concealer that has your skin color.
Bear in mind that you are probably exaggerating to begin with, that is, your pimple is not as nearly so visible as you think.