Does hydroquinone treatment treat post-inflammatory hyperpigmentation?

Post-inflammatory hyperpigmentation is a dark mark left after inflammation or injury has settled. Acne, eczema, burns, bites, scratching, and procedures can all leave extra pigment. Hydroquinone can slow pigment production in the marked area, but it does not treat the acne, rash, wound, or other event that created the mark.

The colour may be brown, grey-brown, or deeper depending on where pigment sits in the skin. Freshly inflamed skin is more likely to react to strong products, so treatment is usually considered after the active problem is controlled.

Have the original cause assessed if it is still active, then ask whether hydroquinone suits the mark and your skin tone. Apply only as directed to intact skin, avoid picking or scrubbing, and stop if strong irritation appears. Gentle cleansing, moisturising, and daily broad-spectrum sun protection can reduce further darkening.

Give the skin time to change and attend follow-up if advised. If new marks keep appearing, the priority is finding and controlling the continuing inflammation rather than repeatedly lightening individual spots.

Seek care for spreading redness, warmth, pain, pus, blistering, or a wound that is not healing, because these suggest an active skin problem. Stop hydroquinone and get advice for severe burning, swelling, or persistent rash. A mark that bleeds, crusts, or changes quickly needs examination.

Ask what caused the inflammation, whether it has fully settled, how to prevent further marks, where to apply hydroquinone, and when to review progress. Mention recent procedures, allergies, eczema, acne treatments, and any reaction to lightening products.