Salicylic acid
Salicylic acid is a popular over-the-counter ingredient in many skin cleansers. It breaks down dead skin cells and extra oil before they can clog your pores.
When you go to the pharmacy, check the ingredient labels carefully. You’ll find products with salicylic acid that range in strength from 0.5% to 5%. The acid can be harsh on some people’s skin. You might want to put it on every other day, rather than daily, to see how your skin reacts.
As for other acne-fighting ingredients, blackheads don’t contain bacteria, so benzoyl peroxide — a powerful antibacterial against most other forms of acne — may or may not help.
Chemical peels
A chemical peel is usually for people who want to improve the appearance of sun damage and minor scars, but it may help with certain types of acne. The procedure can unclog pores and start up new skin growth.
You get a chemical peel in your doctor’s office. It removes cells from the top layer of your skin.