Philips BU-1S UVB Lamp

Philips BU-1S UVB Lamp – Medical device for vitiligo, psoriasis and eczema

Manage skin conditions effectively and conveniently at home. The Philips BU‑1S medical device emits a precise 311 nm NB‑UVB wavelength that supports the treatment of:

• Vitiligo
• Psoriasis
• Atopic eczema
• Seborrhoeic dermatitis
• Other eczema, including hand eczema

Technical Specifications

Model: Philips BU-1S
Dimensions: 300 × 55 × 45 mm
Weight: 0.48 kg
Emission peak: 311 nm (narrowband UVB)
Irradiance: ≥ 7 mW/cm²
Manufacturer: YouWeMed

Preparing for Your First Session

Directions for Use

• Treat 2–3 times per week, leaving at least one full day between sessions.
• Only treat when any redness (erythema) from the previous session has subsided and the skin has fully recovered.

A skin reaction (erythema - redness) typically appears 6–8 hours after exposure:

• No redness: increase exposure time by 20 seconds at the next session.
• Mild redness: if it clears within 24 hours, extend by 20 seconds at the next session.
• Noticeable redness (desired state): if it is still pink after 24 hours, keep the same time and wait for it to fully fade.
• Marked redness: pause treatment until the skin returns to normal, then reduce the time by 20%.
• The typical exposure per spot is about 3–4 minutes, depending on skin type.

The Philips BU‑1S handheld NB‑UVB lamp is designed to be user-friendly, versatile and highly effective for managing vitiligo, psoriasis and other inflammatory skin conditions. With regular, well‑titrated use, you can support healthier, more even skin.