Why Choose This 311nm NB-UVB Phototherapy Lamp

Features	Advantages
104 cm² Treatment Area	Dual Philips lamps provide a larger irradiation area for treating larger localized skin patches.
20 mW/cm² Irradiation Intensity	Delivers controlled 311nm NB-UVB output for targeted home phototherapy.
Philips UVB Light Source	Equipped with Philips narrowband UVB lamps with a rated lifespan of up to 1,000 hours.
Handheld + Hands-Free Use	Remove the treatment lamp for handheld irradiation or place it on the base for hands-free treatment.
90° Adjustable Treatment Angle	Adjust the lamp angle according to the treatment area and preferred treatment position.
Built-In Timer & LCD	Set and monitor treatment time directly through the integrated control system.

USD $299 vs. USD $375 — Which 311nm UVB Lamp Is Right for You

	USD $299 — KN-4003BL (click here to check)	USD $375 — KN-4006B
Light Type	311nm Narrowband UVB	311nm Narrowband UVB
Irradiation Intensity	20 mW/cm²	20 mW/cm²
Irradiation Area	55 cm² ±10%	104 cm² ±10%
Light Source	Philips 311nm NB-UVB Lamp	Philips 311nm NB-UVB Lamp
Timer Function	✓ Yes	✓ Yes
Key Design Difference	Detachable comb helps separate hair and maintain spacing during treatment, making it especially convenient for scalp and hair-covered areas.	Detachable treatment handle can be removed from the main unit for handheld treatment or placed back onto the host for hands-free irradiation.
Best for Lesion Size	Localized areas smaller than approximately one palm	Larger localized areas greater than approximately one palm
Best Treatment Areas	Scalp and smaller localized areas on the body	Larger areas on the arms, legs, back, abdomen and other body areas
Recommended If…	Choose this model if your main concern is smaller patches or scalp lesions, and you want a more compact and lower-cost option.	Choose this model if you frequently need to treat larger patches and want a wider irradiation area with more flexible handheld or hands-free use.

Choose the $375 model if you need to treat larger localized areas or prefer the flexibility of both handheld and hands-free phototherapy.

Specification

Model	KN-4006B
Light Source	311nm Narrow Band UVB Light
Power	AC 100-240V 50/60HZ | 60 VA
Irradiated Area	104 cm²±10%
Irradiation Intensity	20 mW/cm²
Spectral Range	UVB：311~312 nm
Peak Wavelength	311 nm
Light Life Span	1000 Hours
Indication	Vitiligo; Psoriasis; Eczema; Pityriasis Rosea
Certification	ISO 9001:2008;  ISO 13485:2003;  FDA 510(k) Cleared (No. K181805);  CE
Net Weight	110V: 2.1kg;     220V: 1.8kg
Warranty	12 Months

How Does 311nm NB-UVB Work for Vitiligo?

311nm narrowband UVB (NB-UVB) delivers controlled ultraviolet light to vitiligo-affected skin. It is commonly used in phototherapy to help regulate local immune activity and support the activity of melanocytes, the cells responsible for producing skin pigment.

Its role in vitiligo management can be understood in three main ways:

1. Supports Melanocyte Activity
311nm NB-UVB can stimulate melanocyte activity and support the production of melanin, the pigment responsible for skin color.

2. Supports Repigmentation
UVB exposure can influence keratinocytes and other signaling processes involved in melanocyte growth and migration, helping support gradual repigmentation of affected areas.

3. Helps Regulate Local Immune Activity
Vitiligo involves immune activity that can damage melanocytes. NB-UVB has local immunomodulatory effects that may help create a more favorable environment for melanocyte survival and repigmentation.

LCD Display Screen

High-definition display screen, clear and easy to read and touch, giving you a smooth and comfortable use experience.

Handheld or Hands-Free — Choose the Way You Treat

The detachable treatment lamp gives you two ways to use the device. Hold the lamp directly for precise treatment of different body areas, or place it on the base for convenient hands-free irradiation.

The hands-free design is especially useful for longer sessions or treatment areas that are easier to position beneath the lamp.

90° Adjustable Treatment Angle

When mounted on the base, the treatment lamp can be adjusted up to 90° to accommodate different treatment areas and body positions. This allows users to find a more comfortable position during hands-free phototherapy.

Lightweight Handheld Design

The phototherapy lamp is lightweight and can be held in one hand for a long time without feeling tired. Patients can use this product independently at home for phased phototherapy.

104 cm² Larger Treatment Area

Two Philips UVB lamps provide a 104 cm² ±10% irradiation area, offering nearly twice the treatment coverage of our $299 portable model.

The larger treatment window makes this model better suited for users who need to irradiate localized skin areas approximately one palm or larger.

Reflective Lamp Housing

The internal reflective design helps direct UVB output toward the treatment area and supports more efficient use of the light generated by the dual-lamp system.

Application

Customer Treatment Example

The following example shows treatment progress shared from an individual case. Individual responses to NB-UVB phototherapy may vary depending on the skin condition, treatment protocol, treatment frequency and individual response.

Packing List

Important Safety Information

Always wear the included UV-protective goggles before starting phototherapy. Treatment time and frequency should be determined according to individual skin condition and professional guidance.

Before use, consult a dermatologist or qualified healthcare professional if you have a photosensitivity disorder, are taking photosensitizing medications, have other conditions that may affect UV sensitivity, or are unsure whether NB-UVB phototherapy is appropriate for you.

After treatment, protect the treated area from unnecessary sun exposure and follow appropriate physical sun-protection measures.

FAQs