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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
- Plug in the mains lead and switch the unit on.
- Initial exposure time:
- Adults: 30 seconds
- Children: 15 seconds
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.
Frequently Asked Questions – Philips BU‑1S for psoriasis
Is the Philips BU‑1S UVB lamp suitable for scalp psoriasis?
Yes. The BU‑1S includes a comb attachment that helps to part the hair and bring the 311 nm NB‑UVB light closer to the scalp. Treat small areas at a time, always wear the supplied UV‑protective goggles and avoid shining the light into the eyes or on mucous membranes.
How often can I use 311 nm UVB for psoriasis at home?
In most cases, psoriasis is treated 2–3 times per week with at least one rest day between sessions. Do not treat the same area more than once per day. Only increase the exposure time when any redness from the previous session has completely settled.
Can I combine this lamp with topical psoriasis creams?
Many patients use NB‑UVB together with topical treatments such as emollients and prescribed creams. Neutral moisturisers can usually be applied after each session once the skin has cooled down. Some active ingredients (for example strong corticosteroids, retinoids, salicylic acid or tar preparations) may increase photosensitivity. Always follow the advice of your dermatologist or the product leaflet on how to combine them with UVB treatment.
How long does it usually take to see improvement in psoriasis?
Psoriasis is a chronic condition and it typically takes several weeks of regular treatment to notice changes. Many patients start to see smoother, less red plaques after about 4–8 weeks of consistent NB‑UVB therapy, in some cases it can take longer. Results vary between individuals.
Frequently Asked Questions – Philips BU‑1S for vitiligo
Is the Philips BU‑1S suitable for vitiligo?
Yes. The Philips BU‑1S handheld lamp uses 311 nm narrowband UVB, which is the standard wavelength used in many dermatology clinics for vitiligo phototherapy. It is designed for treating small to medium sized patches on the face, hands and body.
How often should I use 311 nm UVB for vitiligo?
In most vitiligo protocols, NB‑UVB is used 2–3 times per week, with at least one complete rest day between sessions. Do not treat the same area more than once per day. Increase the exposure time only when the skin has fully recovered and there is no persistent redness from the previous session.
How long does it take to see repigmentation in vitiligo?
Repigmentation in vitiligo is usually gradual. Many patients need at least 2–3 months of regular NB‑UVB treatment to see the first small freckles of pigment, and meaningful improvement often takes 6–12 months. Areas like the face and neck tend to respond better than hands and feet. Results vary from person to person, so it is important to be patient and continue treatment as advised.
Can I combine the BU‑1S with topical creams for vitiligo?
Yes, NB‑UVB is often combined with topical therapies such as calcineurin inhibitors or creams prescribed by a dermatologist. In many protocols, the cream is applied after the UVB session on cooled, dry skin. Because some products can increase photosensitivity, always follow the specific instructions of your dermatologist or the product leaflet when using them together with UVB light.
Richard,
2.4.2025 11:29.54
psoriasis
I've been using the Philips UVB lamp for my psoriasis treatment over the past few weeks. It has noticeably reduced my symptoms, and I'll certainly continue with the treatment.
Richard,
2.4.2025 10:29.54
psoriasis
I've been using the Philips UVB lamp for my psoriasis treatment over the past few weeks. It has noticeably reduced my symptoms, and I'll certainly continue with the treatment.
£135
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