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Kernel KN-4003BL2 UVB Lamp – Professional narrowband UVB phototherapy with OLED display for precise home treatment
The Kernel KN-4003BL2 uses a genuine Philips PL-S 9W/01/2P 311 nm narrowband UVB bulb – the clinically validated spectrum for targeted treatment of vitiligo, psoriasis and eczema at home.
Equipped with an OLED display, microcomputer timer, integrated reflector and a removable comb attachment – delivering focused, consistent UVB output with professional-grade control.
Why customers choose Kernel KN-4003BL2
The Kernel KN-4003BL2 is ideal for treating small to medium-sized patches. The comb attachment makes it especially practical for scalp psoriasis and difficult-to-reach spots – elbows, knees, scalp and hairline.
Where vitiligo often responds best
Typical course of repigmentation
Technical Specifications
| Device specifications | |
|---|---|
| Parameter | Value |
| Model | Kernel KN-4003BL2 |
| Spectrum | NB-UVB 311 nm ± 3 nm |
| Light source | 1× Philips PL-S 9W/01/2P UVB lamp |
| Lamp power | 9 W |
| Rated power | 50 W |
| Irradiation area | 55 cm² ± 10% |
| Working distance | 3 cm ± 0.5 cm |
| Display | OLED |
| Max exposure | 30 minutes |
| Enclosure | IP22 |
| Dimensions | 330 × 58.5 × 61.5 mm |
| Power supply | 120V / 60Hz (US plug) |
| Weight | 905 g |
| Warranty | 1 year |
| Manufacturer | Kernel Medical Equipment Co., Ltd. |
Package Contents
What is Included
| ① | Kernel KN-4003BL2 NB-UVB phototherapy unit |
| ② | Comb attachment for scalp treatment |
| ③ | Safety goggles |
| ④ | Power cable |
| ⑤ | User manual |
Usage and Safety Information
Preparing for your first treatment
- Connect the power adapter and switch the unit on.
- Maintain the recommended 3 cm treatment distance – use the comb attachment to maintain this distance automatically.
- Recommended initial exposure time:
- Adults: 30 seconds
- Children: 15 seconds
How to use Kernel KN-4003BL2
- Treat 2–3 times per week with a minimum of 48 hours between sessions.
- Only treat when any redness (erythema) from the previous session has fully faded.
- Use the OLED display and microcomputer timer to set the exact treatment duration.
- For scalp treatment, attach the comb head to part the hair and bring the UVB light directly to the skin.
- For best results, treat each area for approximately 3–4 minutes depending on skin type.
Skin reaction (erythema) guide
Redness typically appears 6–8 hours after treatment:
- No redness: Increase exposure time by 20 seconds for the next session.
- Mild redness: If it fades within 24 hours, increase time by 20 seconds next session.
- Moderate redness (target response): If skin still looks pink after 24 hours, wait until fully faded before treating again.
- Strong redness: If redness has not cleared within 2 days, pause treatment until skin returns to normal, then reduce exposure time by 20%.
Kernel KN-4003BL2 UVB Lamp – Professional narrowband UVB phototherapy with OLED display for precise home treatment
The Kernel KN-4003BL2 uses a genuine Philips PL-S 9W/01/2P 311 nm narrowband UVB bulb – the clinically validated spectrum for targeted treatment of vitiligo, psoriasis and eczema at home.
Equipped with an OLED display, microcomputer timer, integrated reflector and a removable comb attachment – delivering focused, consistent UVB output with professional-grade control.
Why customers choose Kernel KN-4003BL2
The Kernel KN-4003BL2 is ideal for treating small to medium-sized patches. The comb attachment makes it especially practical for scalp psoriasis and difficult-to-reach spots – elbows, knees, scalp and hairline.
Where vitiligo often responds best
Typical course of repigmentation
Technical Specifications
| Device specifications | |
|---|---|
| Parameter | Value |
| Model | Kernel KN-4003BL2 |
| Spectrum | NB-UVB 311 nm ± 3 nm |
| Light source | 1× Philips PL-S 9W/01/2P UVB lamp |
| Lamp power | 9 W |
| Rated power | 50 W |
| Irradiation area | 55 cm² ± 10% |
| Working distance | 3 cm ± 0.5 cm |
| Display | OLED |
| Max exposure | 30 minutes |
| Enclosure | IP22 |
| Dimensions | 330 × 58.5 × 61.5 mm |
| Power supply | 120V / 60Hz (US plug) |
| Weight | 905 g |
| Warranty | 1 year |
| Manufacturer | Kernel Medical Equipment Co., Ltd. |
Package Contents
What is Included
| ① | Kernel KN-4003BL2 NB-UVB phototherapy unit |
| ② | Comb attachment for scalp treatment |
| ③ | Safety goggles |
| ④ | Power cable |
| ⑤ | User manual |
Usage and Safety Information
Preparing for your first treatment
- Connect the power adapter and switch the unit on.
- Maintain the recommended 3 cm treatment distance – use the comb attachment to maintain this distance automatically.
- Recommended initial exposure time:
- Adults: 30 seconds
- Children: 15 seconds
How to use Kernel KN-4003BL2
- Treat 2–3 times per week with a minimum of 48 hours between sessions.
- Only treat when any redness (erythema) from the previous session has fully faded.
- Use the OLED display and microcomputer timer to set the exact treatment duration.
- For scalp treatment, attach the comb head to part the hair and bring the UVB light directly to the skin.
- For best results, treat each area for approximately 3–4 minutes depending on skin type.
Skin reaction (erythema) guide
Redness typically appears 6–8 hours after treatment:
- No redness: Increase exposure time by 20 seconds for the next session.
- Mild redness: If it fades within 24 hours, increase time by 20 seconds next session.
- Moderate redness (target response): If skin still looks pink after 24 hours, wait until fully faded before treating again.
- Strong redness: If redness has not cleared within 2 days, pause treatment until skin returns to normal, then reduce exposure time by 20%.
Certifications & Regulatory Compliance
The Kernel KN-4003BL2 is a certified medical device manufactured by Kernel Medical Equipment Co., Ltd. The device meets international quality and safety standards for medical phototherapy equipment.
Certificate Documents
Frequently Asked Questions
Answers to the most common questions about using the Kernel KN-4003BL2 for vitiligo and psoriasis phototherapy at home.
Is the Kernel KN-4003BL2 a Philips lamp?
The device is manufactured by Kernel Medical Equipment, but it uses a genuine Philips PL-S 9W/01/2P narrowband UVB bulb — the same lamp found in clinical phototherapy units. This ensures authentic 311 nm output.
Is the Kernel KN-4003BL2 suitable for scalp psoriasis?
Yes. The included comb attachment is designed to part the hair and bring the 311 nm NB-UVB light closer to the scalp, while also maintaining the correct 3 cm treatment distance. Always wear the supplied UV-protective goggles.
How often should I use the KN-4003BL2 for psoriasis?
Treat 2–3 times per week with at least 48 hours between sessions. Do not treat the same area more than once per day. Only increase exposure time when any redness from the previous session has completely settled.
Can I combine the KN-4003BL2 with topical psoriasis creams?
Yes. Many patients use NB-UVB alongside topical treatments. Apply neutral moisturisers after each session once the skin has cooled. Some active ingredients (corticosteroids, retinoids, salicylic acid) may increase photosensitivity — always follow your dermatologist's advice.
Is the Kernel KN-4003BL2 suitable for vitiligo?
Yes. The KN-4003BL2 uses 311 nm narrowband UVB — the standard wavelength used in 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 the KN-4003BL2 for vitiligo?
Use 2–3 times per week with at least 48 hours between sessions. Increase exposure time only when the skin has fully recovered and there is no persistent redness from the previous session.
How long does repigmentation take?
Repigmentation is gradual. Many patients need at least 2–3 months to see the first pigment freckles, and meaningful improvement often takes 6–12 months. Face and neck tend to respond faster than hands and feet. Consistency is key.
What does the OLED display show?
The OLED screen displays the current timer setting and remaining treatment time. The microcomputer timer automatically shuts the device off when the set time is reached, preventing accidental overexposure.
Can I use the KN-4003BL2 on my face?
Yes, targeted NB-UVB can be applied to facial areas. Always wear the supplied UV-protective goggles and never look directly at the UVB light. Keep the exposure time short and increase gradually.
Is NB-UVB therapy suitable for children?
Yes, but only under paediatric dermatology supervision and with individually adjusted exposure times. The starting time for children is 15 seconds.
Frequently Asked Questions
Answers to the most common questions about using the Kernel KN-4003BL2 for vitiligo and psoriasis phototherapy at home.
Is the Kernel KN-4003BL2 a Philips lamp?
The device is manufactured by Kernel Medical Equipment, but it uses a genuine Philips PL-S 9W/01/2P narrowband UVB bulb — the same lamp found in clinical phototherapy units. This ensures authentic 311 nm output.
Is the Kernel KN-4003BL2 suitable for scalp psoriasis?
Yes. The included comb attachment is designed to part the hair and bring the 311 nm NB-UVB light closer to the scalp, while also maintaining the correct 3 cm treatment distance. Always wear the supplied UV-protective goggles.
How often should I use the KN-4003BL2 for psoriasis?
Treat 2–3 times per week with at least 48 hours between sessions. Do not treat the same area more than once per day. Only increase exposure time when any redness from the previous session has completely settled.
Can I combine the KN-4003BL2 with topical psoriasis creams?
Yes. Many patients use NB-UVB alongside topical treatments. Apply neutral moisturisers after each session once the skin has cooled. Some active ingredients (corticosteroids, retinoids, salicylic acid) may increase photosensitivity — always follow your dermatologist's advice.
Is the Kernel KN-4003BL2 suitable for vitiligo?
Yes. The KN-4003BL2 uses 311 nm narrowband UVB — the standard wavelength used in 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 the KN-4003BL2 for vitiligo?
Use 2–3 times per week with at least 48 hours between sessions. Increase exposure time only when the skin has fully recovered and there is no persistent redness from the previous session.
How long does repigmentation take?
Repigmentation is gradual. Many patients need at least 2–3 months to see the first pigment freckles, and meaningful improvement often takes 6–12 months. Face and neck tend to respond faster than hands and feet. Consistency is key.
What does the OLED display show?
The OLED screen displays the current timer setting and remaining treatment time. The microcomputer timer automatically shuts the device off when the set time is reached, preventing accidental overexposure.
Can I use the KN-4003BL2 on my face?
Yes, targeted NB-UVB can be applied to facial areas. Always wear the supplied UV-protective goggles and never look directly at the UVB light. Keep the exposure time short and increase gradually.
Is NB-UVB therapy suitable for children?
Yes, but only under paediatric dermatology supervision and with individually adjusted exposure times. The starting time for children is 15 seconds.
$375
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