Post-pimple pigmentation: what to know

When a pimple heals, inflammation can stimulate extra pigment in the skin. The mark may be brown, grey, or deeper than the surrounding skin, and it is usually flat rather than raised. Picking, squeezing, harsh scrubs, and ongoing breakouts can create more inflammation and new marks. Dark patches on skin can have other causes, so location, texture, medicines, and the timing of the change are useful clues.

Use broad-spectrum sunscreen on exposed skin and reapply according to the product directions, especially outdoors. Cleanse gently, moisturise, and treat active acne rather than repeatedly touching healed spots. Introduce one pigment product at a time; burning or persistent stinging is a reason to stop and seek advice. A clinician may discuss hydroquinone treatment, a chemical peel, skin brightening treatment, IPL photofacial, or picosecond laser treatment after considering your skin tone, sensitivity, acne activity, and tendency to darken after irritation.

Book a dermatology assessment when pigmentation spreads, changes quickly, becomes raised, bleeds, repeatedly crusts, or does not fit the history of a healed pimple. Seek help sooner if the area is painful, very itchy, swollen, or accompanied by active acne that is scarring. Professional review can prevent an unsuitable peel or light treatment from worsening inflammation.

Ask whether the mark is post-inflammatory pigmentation or another condition, which sunscreen and topical ingredients suit your skin, how to control new pimples, and whether a procedure is appropriate now.