Narrow-band UVB is an effective treatment for vitiligo…” and “… Researchers found this type of phototherapy better tolerated than traditional approaches such as corticosteroids and topical PUVA…”

From Dermatolgy Times: (Natta Rajatanavin MD)

Based on our analyses, we consider NBUVB the treatment of choice for progressive, symmetrical vitiligo, particularly when lesions are present on the face, trunk, arms, and legs.  Compared with PUVA, NBUVB seems to offer comparable efficacy and has the additional advantages of causing less hyperpigmentation of normal skin…

From Dermatology Times (Pearl Grimes MD)

Narrowband UVB has become my treatment of choice for patients with moderate to severe vitiligo, defined as having more than 15 to 20 percent body surface area involvement!