The idea behind using antibiotics for acne is that they can help reduce the number of p. acnes on the skin and relieve an acute case of severe acne. After the person stops taking the antibiotics, the hope is that the reduced numbers of p. acnes will prevent the pimples or cysts from getting out of hand again. However, in reality, most people simply end up taking the antibiotics much longer than they should, and the acne almost always comes back. That’s because, according to The Lancet: Infectious Diseases, over 50 percent of p. acnes strains are resistant to antibiotics7. If your doctor tries to prescribe you antibiotics for your acne, we recommend asking about other courses of action.
Salicylic acid is a topically applied beta-hydroxy acid that stops bacteria from reproducing and has keratolytic properties. It opens obstructed skin pores and promotes shedding of epithelial skin cells. Salicylic acid is known to be less effective than retinoid therapy. Dry skin is the most commonly seen side effect with topical application, though darkening of the skin has been observed in individuals with darker skin types.
Keep in mind that even if some products market themselves toward severe acne breakouts, all the kits we looked at are definitely designed for mild to moderate acne. Not sure if you fit on that scale? You’re not alone! When you’re in the middle of a breakout, all acne seems severe, so it can be difficult to self-diagnose your symptoms. We talked to dermatologists and cosmetic chemists to better understand the differences between the various types of acne (see below).
Salicylic Acid – One of the most common topical ingredients you can find over-the-counter, salicylic acid is generally used to reduce the appearance of acne, by reducing swelling and redness. Also known as a beta-hydroxy acid, it exfoliates your skin4 and unclogs your pores, too, but it is quite strong. You’ll only be able to find this in strengths around 2%, but it can still dry and irritate your skin, especially if yours is sensitive. The safest way to use this ingredient is according to the directions!