Description

Comparison Chart
14-Day Return Policy
- Customers may return eligible products within 14 days of delivery for a refund or exchange.
- For hygiene and safety reasons, opened or used products cannot be returned unless defective or faulty.
- A 20% restocking fee applies to all returns except defective. We will repair, replace, or refund defective items free of charge.
- For full details, please refer to Return Policy under the Warranty tab.
Warranty Information
UVB Lamps – Warranty & Return
Product Warranty
- 1-year warranty on the device
- 500-hour warranty on the UV light source
- Includes free parts, replacements, and shipping for manufacturer defects
- Post-warranty repairs may be arranged through Hey Med Supply
This warranty complies with the Magnuson–Moss Warranty Act, which requires that all terms be clearly disclosed.
14-Day Return Policy
- Returns accepted within 14 days of delivery for a refund or exchange.
- Opened or used products cannot be returned unless defective.
- A 20% restocking fee applies to all returns except defective.
- We will repair, replace, or refund defective items free of charge.
Eligible Returns
- Sealed & Unused: The device, original packaging, and all accessories (including user manual and UV-protective glasses) must be in new, unused, and undamaged condition.
- Defective or Damaged: Products that arrive defective or damaged may be returned, even if opened, as long as the issue is reported within 14 days.
Ineligible Returns
We are unable to accept returns if:
- The return is not authorized in advance
- The request is made after 14 days of delivery
- The return is shipped back more than 5 days after receiving authorization
- The product is no longer in “new” condition, including:
- Devices that are damaged
- Missing or damaged original packaging
- Missing or damaged accessories
- Retail packaging with shipping labels or markings applied directly
How to Return
- Initiate a Return
- Contact our team via email or through our website within 14 days of delivery.
- Complete the return form. Reply to your order confirmation email with the form attached, along with any additional details you'd like to share.
- Receive Authorization
- We will respond within 24 hours with approval and return instructions.
- Unauthorized returns will not be accepted.
- Ship Back the Product
- Repack the item with all original components and undamaged, original packaging.
- Place the product box inside a separate shipping box for protection during transit.
- Do not apply labels directly to the product packaging.
- Ship the return within 5 business days of receiving authorization.
- Customers are responsible for return shipping unless the item is defective or damaged.
- Receive Refund
- Refunds are processed within 48 hours of return inspection.
- We reserve the right to refuse returns showing signs of misuse or wear.
- Please allow 2–3 business days for the refund to appear in your account.
- Returns that do not meet our policy criteria may be declined.
Regulatory Compliance
Hey Med Supply complies with all relevant U.S. consumer protection and FDA regulations, including:
- Magnuson–Moss Warranty Act (clear warranty terms and dispute resolution)
- FDA Quality System Regulation (21 CFR Part 820) (device servicing and safety)
- 21 CFR Part 806 (reporting of medical device corrections or recalls)
- Applicable state laws requiring conspicuous return policy disclosures
Product Details
- Delivery:
- Free shipping 2 - 3 Days
- Application:
- Psoriasis, Vitiligo, Eczema, Pityriasis Rosea, Atopic Dermatitis
- Treatment Area:
- Scalp, Face, Hands and Feet
- Brand Name:
- Kernel
- Product:
- Corded, Handheld 311nm Narrowband UVB Lamp
- Model:
- KN4003BL
- Certificate:
- FDA Approved
- Wavelength:
- 311 nm ± 3 nm
- Light Source:
- 1 x Philips Light Bulb
- Light Intensity:
- 4.5 mw/cm2
- Treatment Size:
- 8.5 in² ± 10%
- Treatment Speed:
- Fast
- Treatment Mode:
- Time
- Work Distance:
- 1.18 in ± 0.20 in
- Built-in MED Test:
- N
- Mobility:
- Corded
- Built-in Battery:
- N
- Power Source:
- 110V (60Hz)
- Screen:
- Basic LED Screen
- Light Source Lifespan:
- ≤ 500h
- Packing List:
- 1 x KN4003BL, 1 x UV-proof Goggles, 1 x Charging Cable, 1 x User Manual
- Dimension:
- 12.48'' L × 2.05'' W × 1.89'' H
- Product Weight:
- 1.63 lbs
Product Videos
Reviews
24 Reviews
-
Very professional team
I received the wand last August and have been using it to treat my eczema ever since. When the bulb stopped emitting light, I reached out to Hey Med after 9pm. They responded very quickly the same night! They handled my warranty repair very professionally. They provided a prepaid return label, and I received my repaired device back in just one week. I was worried that a longer repair time would interrupt my treatment, especially during the dry season, when flare-ups tend to get worse. Their communication was prompt, and it’s clear they truly care about their customers and their business.
-
Worth it
I received the item just before Christmas and have been using it ever since. The guide they sent was really helpful, and combined with the built-in timer and instructional video, my wife was able to start her treatment right away with no issues so far.
-
Unparalleled Post-Sale Service ⭐️⭐️⭐️
I want to highlight just how excellent the customer service is!!! The machine wasn’t from any famous brand, so when the wand stopped working after about three months, I was honestly skeptical that they’d offer any repair, since it’s hard to determine who’s at fault in situations like this. But Hey Med handled the claim professionally and swiftly. They do care about their customers. Once the manufacturer identified the issue as a CPU malfunction, they sent me a brand-new free replacement device within 3 days. It was a seamless from start to finish, and I wouldn’t hesitate to recommend this store to anyone.
-
Compact, Quality and Helpful
I bought the portable wand to treat eczema along my hairline and above my ear. At first, I was a little nervous, but gradually I became more comfortable using the device. I never thought I could manage eczema with some light therapy, but it worked. The red patches cleared faster, and the inflammation went down more quickly compared to using eczema creams. This device has really helped me get through the summer with much less itching.
-
Cannot wait to use it
I just received the device today. In the past, 311nm UVB therapy worked very well for my skin, but after I paused treatment for a while, my condition returned. That’s why I decided to invest in a phototherapy machine of my own—so I can continue treatment conveniently at home.
-
Great Customer Service
Their communication has always been prompt and helpful regarding my questions about the product, instructions, and shipping. Their clear and timely responses definitely eased my nerves about using the device. I'm feeling confident and ready to give phototherapy a try.
-
It arrived in two days!
The delivery is fast and well-packed. I use it to treat eczema between my fingers, on my knuckles, and palms. I try to avoid steroid creams as much as possible, so UVB therapy has been a great alternative.
-
Recommend
It’s worth the price I paid. I’ve been using it for plaque psoriasis since April, and some of the raised, red, inflamed skin around my hairline has cleared up. The dead scales on those patches first darkened and hardened, then gradually fell off as new skin formed after two-month of treatment. The process is slow, but it’s working. You need to be consistent and patient.
-
It definitely works!
I got this to treat the eczema on my elbows, which was itchy and sometimes painful, especially during the summer. Since purchasing it in April, I’ve been using it consistently, and I can confidently say that there’s been significantly less rash compared to the same time last year.
-
Would recommend
I started using this device after my dermatologist recommended narrowband UVB therapy for my vitiligo. I’ve been treating my hands and face 3 times a week, and after 3 months, there’s already noticeable repigmentation.
-
Good enough
The delivery was quick. Let's try it out!
-
Affordable option
The eczema on my fingers, elbows, and the hollows behind my knees has been getting itchier as the weather gets hotter. I’m applying lotion regularly, and I’m hopeful that this lamp will bring some relief. I plan to stick with the treatment three times a week throughout the summer to see what kind of difference it makes.










