Yes. Narrowband UVB is one of the most clinically proven treatments for vitiligo and psoriasis. Studies show repigmentation rates of 70%+ in many patients with consistent use over 3–6 months.

Most patients begin to see improvement in 8–12 weeks. Optimal results typically appear after 4–6 months of consistent treatment (3x per week). Patience and consistency are key.

Absolutely. YOUWEMED devices are designed for safe, easy home use. Each device includes a detailed user manual, treatment protocols, and timer controls. We also provide remote support to help you get started.

Yes — when used as directed. Our devices include built-in timers, safety interlocks, and protective goggles. Always follow the included treatment schedule and start with short exposure times to build tolerance.

UVB penetrates and damages the outermost layers of your skin. Overexposure causes suntan, sunburn and, in severe cases, blistering. After stopping the irradiation, the metabolism will return to normal skin color within 1-3 months. If you are worried about the skin turning black, you can cover the normal skin with a blackout cloth/opaque cotton cloth, or apply sunscreen (SPF30 or above).

Sure, but this is only a secondary and accompanying physiological effect during its treatment process, rather than the main therapeutic goal. The ultraviolet band emitted by medical phototherapy devices (especially NB-UVB, peak wavelength 311nm) precisely covers the effective band for synthesizing vitamin D. Therefore, during phototherapy, the skin does indeed synthesize vitamin D synchronously.

NB-UVB (Narrow-band ultraviolet light B): nbUVB is currently the most successful treatment for patients with vitiligo. It is largely safe when administered correctly, but requires a time commitment.