What should you know about a scar from a chemical burn?

Chemical injury may continue damaging tissue until the substance is removed and the area is properly assessed. Once healed, the skin may be darker or lighter, raised, indented, tight, itchy, sensitive, or less flexible. A scar near an eye, mouth, hand, or joint deserves particular attention because small changes can affect function.

The appearance alone cannot show the full depth of injury. A clinician reviews the chemical exposure, first aid, healing course, skin surface, sensation, and movement before recommending cosmetic or reconstructive treatment.

For a fresh exposure, remove contaminated clothing and follow emergency decontamination advice; do not apply household creams or attempt to neutralise one chemical with another. A closed scar should be protected from sun and friction, moisturised as advised, and not scratched or peeled.

If the scar is stable, options can include fractional laser treatment for selected texture changes, scar revision surgery for a problematic contour or band, or a skin graft when coverage and function require reconstruction. A specialist should match the option to the scar rather than treating colour alone.

Seek emergency care for a fresh chemical exposure, eye involvement, breathing symptoms, severe pain, extensive blistering, or skin that is white, black, numb, or rapidly worsening. For a healed scar, prompt review is needed if it opens, bleeds, drains, becomes hot and painful, or restricts movement.

Could the chemical injury have affected deeper tissue? Is the scar stable enough for treatment? Would laser, revision surgery, or grafting best address the texture or movement problem? How should I protect the area while its colour and sensitivity change?