What to expect from topical retinoids for post-inflammatory hyperpigmentation

Post-inflammatory hyperpigmentation is extra colour left after inflammation or injury, such as acne, eczema, or a rash. Retinoids help skin cells shed in a more organised way and may support more even tone. They do not stop the original trigger, so ongoing acne or irritation can create new marks. Redness, peeling, and burning are possible; inflammation from overuse may make pigmentation look darker, particularly in deeper skin tones.

Apply a thin layer to dry skin according to your clinician's schedule, and increase use only when your skin tolerates it. Moisturise regularly and avoid picking, harsh scrubbing, or combining multiple strong products without guidance. Use daytime sun protection and reduce direct exposure, because ultraviolet light can maintain uneven colour. Tell your clinician about active acne, eczema, recent procedures, pregnancy, or breastfeeding before starting.

Stop and seek medical advice for intense burning, swelling, blistering, or a rash that spreads. Arrange assessment when a mark is new without a clear preceding irritation, changes quickly, bleeds, becomes painful, or does not behave like your other marks. A clinician can check whether ongoing inflammation needs treatment first.

Ask what caused the pigmentation, whether the retinoid is suitable for your skin, and how slowly to introduce it. Ask which products can be combined safely, how to respond to irritation, and what sun-protection routine will support the plan.