What to expect from picosecond laser treatment for exogenous ochronosis

Exogenous ochronosis is a form of acquired pigmentation associated with exposure to some skin-lightening products, often affecting the face. The pigment may sit deeper in the skin and can appear blue-black, grey-brown, or speckled. A dermatologist may examine the pattern, review product use, and consider whether another condition needs to be excluded before laser. Picosecond pulses may target pigment with limited heat, but response can be uneven and may take time to judge.

Tell the clinician every cream, soap, peel, and supplement used on the area, and stop any suspected harmful product only with suitable medical guidance. Avoid tanning and arrive without irritating products on the skin. After treatment, use gentle cleansing and moisturising, do not pick flakes or crusts, and protect the area from sunlight. Keep scheduled reviews so the clinician can distinguish healing from ongoing irritation and decide whether another session is appropriate.

Contact the clinic for increasing pain, blistering, open sores, spreading redness, pus, severe swelling, or a colour change that is rapidly worsening. Mild warmth, redness, tenderness, or temporary darkening may happen, but a reaction that fails to settle or interferes with normal activities needs assessment.

Ask how the diagnosis was established, which products should be avoided, whether a test spot is suitable, and how treatment response will be monitored. Ask what other options may be considered if pigment persists and how to protect the skin during recovery.