How effective are topical retinoids for comedonal acne?

Comedones form when oil and shed skin cells collect in a follicle. An open comedone looks like a blackhead, while a closed comedone appears as a small white or skin-coloured bump. Retinoids improve the way cells shed within the pore, so existing blockages can gradually loosen and new ones can be reduced. They do not work by physically scraping blackheads away. Dryness, flaking and irritation are possible, and squeezing can deepen inflammation or leave marks.

Apply a thin layer to the acne-prone area according to your prescription, not a thick layer over individual bumps. Cleanse gently, moisturise and avoid abrasive scrubs or picking. Use sun protection when exposed, since irritation can make marks more visible. If bumps are inflamed, painful or persistent, the plan may need more than a retinoid alone. Explore [Comedonal Acne](/conditions/comedonal-acne/) and [Topical Retinoids](/treatments/medical-dermatology/topical-retinoids/).

Arrange an assessment if comedones are leaving scars, spreading to the chest or back, or accompanied by tender inflamed spots. Contact your clinician about severe redness, burning, swelling, blistering or broken skin after treatment. A review can also distinguish comedones from other small bumps that need a different approach.

Ask how much product to use, whether your cleanser or cosmetics could be contributing to blockage, and when to expect a review. Discuss how to manage peeling and whether another medicine is needed if inflammation or scarring is present.