Retin-A is another treatment which is the first topical retinoid. Tretinoin efficiently copes with the formation of comedones despite their form. Those who suffer from noninflammatory acne would enjoy the results of this stand-alone medicament. Patients may mix Tretinoin with antibiotics in order to moderate inflammatory acne. Usually, consumers need to have a prescription before buying the treatment in one of the available shapes: cream, a gel, liquid Retin-A, or microsphere gel. Take it once per day.