About 308nm Xecl Excimer Light
The 308nm excimer light is a single-frequency light with a wavelength of 308nm produced by xenon chloride gas as the medium. The wavelength is close to NB-UVB, but the energy is 5-10 times higher than that. It can activate the differentiation, maturation and migration of hair follicles and skin melanocyte stem cells, and induce T lymphocyte death, promoting the restoration of white spots.
308nm excimer light is currently one of the most advanced phototherapy technologies for the treatment of vitiligo(the other one is the 308nm excimer laser which is most used in hospitals), and it is also the phototherapy device for the treatment of vitiligo approved by the US Food and Drug Administration (FDA).
308nm excimer light can also be safely used for the treatment of special parts including eyelids, lips, external genitalia, perianal area, etc., but patients with photosensitive diseases are not suitable for irradiation.
Specification
Model | KN-5000C |
Light Source | Xecl excimer Light |
Power | AC 100-240V 50/60HZ | 160 VA |
Irradiated Area | 20 cm2 ± 1 cm2 |
UVB Dose Setting Range | 0~5000 J / cm2 |
UVB Time Setting Range | 0~120 Seconds |
Irradiation Intensity | 45 mW / cm2 |
Spectral Range | UVB:290~320nm |
Peak Wavelength | 308 nm ± 2 nm |
Light Life Span | ≥ 500 Hours |
Indication | Vitiligo; Psoriasis; Eczema; Pityriasis Rosea |
Certification | ISO13485; FDA |
Warranty | 12 Months |
Work Environment
- Temperature: 5~40℃
- Relative humidity: ≤ 85%
- Atmospheric pressure: 700~1060hpa
Shipping and Storage Environment
- Temperature: -40~55℃
- Relative humidity: ≤ 90%
- Astomospheric pressure: 500~1060hpa

The Control System

Full touching screen
8” TFT touching screen with user friendly GUI design, smooth operation without lag, making the operation easier. High-definition display, good visual experience; a small screen accommodates many functions, making treatment more convenient.

MED Test
A built-in MED test program enhances treatment evaluation and efficacy assessment. There are 6 types of skin selection for your convenience to test the initial exposure, ensuring the safe, orderly and effective treatment from the beginning to the end of the entire treatment cycle. For individual users, please do the MED test under the guidance of professionals or dermatologists before starting the initial treatment.

Two Treatment Modes for Your Preference: Time/Dose Mode
There are two modes for your treatment choice, you may choose time mode or dose mode as per your own situation under the guidance of your dermatologist. Before starting each treatment, you can first select the dose mode to set the total dose, or select the time mode to set the total exposure time. When the set parameters are used up, it means that the treatment is over and the machine will automatically stop working. There is no need to worry about accidental excessive exposure, it saves trouble and worry, bringing you a comfortable and energy-saving irradiation experience.

Long Service Life and Even Light Output
Leveraging a 308nm excimer light source, the system ensures enduring, high-energy performance and even light output to keep the best treatment effect. The total life span is 500 hours and even more, which is definitely enough for the whole treatment.

Treatment Information Management
For individual users, when the user uses the machine for the first time, after setting the treatment program, he/she can enter his/her fingerprint into the system, so that he/she can directly open the set treatment program and irradiate the treatment next time.
For clinical use, the dermatologist can enter the patient’s fingerprint as well, making it easy for the dermatologist to arrange all patients’ cases and information.

Quick Connection Between the Host and the Handle
The handle is independent from the host, the right connection is vital to use the machine effectively, so there is one red lock reminder to ensure the connection of the handle and the host is right.
The Independent Handle

Ergonomically Designed Lightweight Handle
The handle is designed ergonomically, and the iron-shaped design ensures a comfortable holding feeling. Light weight is convenient for the individual user to hold it even for a long time.

6 Hoods with Different-size Holes
The handle comes with 6 hoods with different-size holes, which is convenient for the individual or the dermatologist to irradiate white spots with different sizes, avoiding extra light irradiating normal skin.

ON/OFF Button on the Handle
There is one ON/OFF button on the independent handle as well, which is convenient for the user or the dermatologist to control the treatment.
Anti-UV Goggles

The machine comes with one Anti-UV goggles. Before starting irradiation, please remember to wear the goggles to protect your own eyes.
Application

308nm Excimer Light for Vitiligo
308nm excimer light is able to uniformly induce T cell apoptosis and stimulate the rapid division and proliferation of normal melanin in the hair follicles in the white spots. And eventually the skin can mostly recover to its original color.
After being irradiated for a period of time, most patients can observe darkening of the pigmentation at the edge of the white spot and the appearance of pigment islands within 2-4 weeks.

308nm Excimer Light for Psoriasis
308nm excimer light irradiation inhibits the proliferation of lymphocytes, reduces the number of inflammatory cells, and alleviates the inflammatory response in psoriasis patients.
After a period of irradiation, the Inflammatory symptoms can be effectively improved.

308nm Excimer Light for Pityriasis Rosea
308nm excimer light can affect the activity of inflammatory cells and inflammatory mediators, reduce the intensity of inflammatory response, and thus relieve symptoms such as redness, swelling, and itching of pityriasis rosea.
The patient also can accept the light irradiation together with topical medications under the guidance of the dermatologist, effectively avoiding the worsening of pityriasis rosea because of uncontrollable scrabing.

308nm Excimer Light for Eczema
Like its effect on pityriasis rosea, 308nm excimer light can affect the activity of inflammatory cells and inflammatory mediators, reduce the intensity of inflammatory response, and thus relieve symptoms such as redness, swelling, and itching of eczema.
The patient also can accept the light irradiation together with topical medications under the guidance of the dermatologist, effectively avoiding the worsening of eczema because of uncontrollable scrabing.
Visible Treatment Effect
Different from the 308nm NB-UVB LED light, the single irradiation time of the 308nm excimer light is calculated with seconds. Additionally, the excimer light is emitted in a planar state, with uniform irradiation, ensuring that every point of a diseased area can be evenly irradiated.
Usually, most users can observe darkening of the pigmentation at the edge of the white spot and the appearance of pigment islands on their skin within 2-4 weeks. Normally, erythema may occur locally after treatment, which generally lasts for about 24 to 48 hours and can basically disappear.



There is one user’s treatment case:

User Information
Gender: Male
Age: 19
Disease Duration: 9 months
Diagnostic Result
The lesions occurred on the back of the neck, with obvious depigmentation and clear edges, without involving the hair. The lesions appeared bluish-white under the Wood’s lamp, and were diagnosed as vitiligo.
Phototherapy Plan
KN-5000C excimer light irradiation, 2 to 3 times a week, with an interval of no less than 24 hours between two irradiations. The initial irradiation dose is 200mJ/cm², and the dose is gradually adjusted according to the erythema reaction.
Packing List

1* 308nm excimer phototherapy machine
1* Fuse
1* 6 different-size hoods
1* User Manual
1* Power Cord (as per your shipping address)
Attention Tips for Using 308nm Excimer Light Phototherapy
- 308nm excimer light is suitable for patients of all ages from infants to the elderly. It can also be safely used for the treatment of special parts including eyelids, lips, external genitalia, and perianal areas.
- Patients with solar dermatitis, lupus erythematosus, malignant tumors, xeroderma pigmentosum, Bloom syndrome, dermatomyositis, pregnant women, and other patients who are not suitable for ultraviolet irradiation treatment, etc. are not suitable for this irradiation.
- Please remember to put on the anti-uv goggles before turn on the machine!
- Avoid skin trauma and friction, and patients should not wear tight clothes.
- Patients should wear sunscreen when going out and avoid strong sunlight after treatment, such as swimming at low-latitude beaches or traveling in high-altitude areas. Special attention should be paid to the fact that ultraviolet rays can damage the skin and induce and aggravate the condition.
- Avoid chemical stimulation. Patients should not dye their hair or paint their nails, and their hands should not often come into contact with irritating chemicals.
- Patients should eat a normal and balanced diet without any dietary restrictions. Try to reduce or avoid smoking and drinking, and take vitamin drugs.
FAQs
No, it is not painful. But some users may feel a feeling of warmth during irradiation.
308 excimer light therapy uses the 308nm single wavelength ultraviolet light, which has been polished through years of clinical practice and has a high degree of technical maturity. It can accurately act on vitiligo lesions, inducing apoptosis of diseased T cells, blocking immune attacks, activating melanocyte regeneration, and accelerating melanin synthesis without hurting normal skin.
Yes, it can be used on children and elderly under medical supervision and based on clinical assessment.
Clean your skin. Remove any make up, moisturizing lotions and creams, clear any scales. Cover healthy skin either with clothing or sun block. Always put on anti-uv goggles before starting treatment.
Physical Picture



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