Find out if this commonly prescribed antibiotic is right for you Medically reviewed by William Truswell, MD Doxycycline is an antibiotic that can be used to treat acne. As part of a group of ...

Those extra ingredients can include salicylic acid, niacinamide, tea tree, and more and may help reduce redness, swelling ... work as well on deeper or cystic acne lesions,” says Dr. McTighe.

Those extra ingredients can include salicylic acid, niacinamide, tea tree, and more and may help reduce redness, swelling ... work as well on deeper or cystic acne lesions,” says Dr. McTighe.