Hi John,
Thank you for sharing your experience.
Please wait until all redness has completely disappeared before using the lamp again. Never treat skin that is still pink, sore, irritated or peeling.
Use the UVB lamp only 2–3 times per week, always leaving at least one full rest day between sessions. Measure every session precisely with a timer, do not estimate the exposure time, and avoid treating the same area twice through overlapping. Increase the exposure only gradually according to the treatment protocol.
Mild temporary pinkness can occur, but stronger or persistent redness means that the dose was too high. In that case, pause treatment until the skin has fully recovered and reduce the exposure time at the next session.
As your vitiligo is on the face, we would also recommend asking your doctor or dermatologist whether Protopic 0.1% ointment may be suitable for you. It is a prescription medicine and is often used for facial vitiligo, where the response can be particularly very good. Use it only as prescribed and do not apply it immediately before UVB treatment.
You can find our complete treatment protocol here:
https://www.vitiligoshop.co.uk/c/vitiligo-treatment
We wish you continued progress with your treatment.