Medication Summary
Both topical and oral therapies have been tried. Improvement may occur with the use of topical retinoic acid, salicylic acid, or ammonium lactate lotion. Isotretinoin (Accutane) is not usually recommended because of the long-term treatment requirement, but it may be beneficial in preventing cyst formation.
Retinoids
Class Summary
Topical retinoids are known to have effects on keratinocyte proliferation and differentiation. This is believed to loosen comedones and facilitate extraction.[30, 31]
Tretinoin topical (Avita, Retin-A)
Inhibits microcomedo formation and eliminates lesions present. Makes keratinocytes in sebaceous follicles less adherent and easier to remove. Available as 0.025, 0.05, and 0.1% creams. Available also as 0.01 and 0.025% gels.
Keratolytic agents
Class Summary
Cause cornified epithelium to swell, soften, macerate, and then desquamate.
Ammonium lactate lotion (AmLactin, Lac Hydrin)
Contains lactic acid, an alpha hydroxy acid that has keratolytic action, thus facilitating release of comedones. Comes in 12% and 5% strength. The 12% may cause
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