Quick answer
Xeroderma pigmentosum (XP) is a rare genetic condition in which the skin cannot repair DNA damage from ultraviolet light, so even brief sun exposure raises the risk of skin cancer. Darker window tint and UV-blocking film are standard protective measures for XP, and nearly every state that offers a medical tint exemption recognizes XP as a qualifying condition. ShadedMD provides a physician-reviewed exemption certificate online for $129 in 24 to 48 hours.
Key takeaways
- XP patients have roughly a thousand-fold higher risk of skin cancer than the general population, and protection from UV is lifelong.
- Car side windows block only part of UVA, so an XP patient sitting in a car is still being exposed.
- A medical tint exemption lets XP families install film far darker than standard limits on side and rear windows, in most states.
- Exemptions can cover a child or family member who is a regular passenger, depending on the state.
- ShadedMD reviews XP cases online with licensed physicians, for a flat $129, with a 30-day money-back guarantee.
What xeroderma pigmentosum does to the skin
Xeroderma pigmentosum is an inherited disorder of DNA repair. In most people, cells fix the damage UV light does to DNA within hours. In XP, that repair system is broken. The damage stays, mutations accumulate, and skin cancers appear decades earlier than usual, often in childhood.
Early signs include severe sunburn after minutes outside, freckling on sun-exposed skin before age two, dry and thinned skin, and eye problems such as light sensitivity and inflammation. About a quarter of people with XP also develop neurological symptoms. There is no cure. Protection from UV is the treatment, and it has to be total.
Families living with XP learn to think about every source of UV: windows at home, fluorescent lights, and especially cars. A car is a glass box that spends its life in the sun.
Why cars are a problem for XP
Laminated windshields block nearly all UV. Tempered side and rear windows do not. Untreated side glass typically lets a meaningful share of UVA through, and UVA penetrates deep into the skin. For an XP patient, the driver's side window and the rear window next to a child's car seat are direct exposure points. Our article on whether car window tint blocks UV covers the numbers.
Quality window film changes that. Most tint films, including clear ones, block 99% or more of UV. But XP specialists often recommend going further, because visible light and heat also matter for comfort and because darker film reduces the total light load on skin and eyes. That is where state tint limits get in the way. Most states cap front side windows at somewhere between 25% and 70% VLT, and a medical exemption is the legal way past that cap.
XP and the medical tint exemption
Xeroderma pigmentosum is one of the conditions most often written directly into state tint exemption rules. When a state lists example conditions, XP is usually there next to lupus, porphyria, and albinism. For a reviewing physician, a confirmed XP diagnosis is about as clear a case as exists. Read our overview of conditions that qualify for the full picture.
Two practical points matter for XP families:
- Passengers. Many XP patients are children. Depending on the state, an exemption can be issued on behalf of a regular passenger rather than the driver. The certificate guidance from ShadedMD explains how your state handles this.
- All windows. Because XP is about UV and not only glare, families usually want protection on every side and rear window, not just the driver's window. The exemption process is the same.
Not every state offers a medical exemption, and a few limit what the exemption allows. Check your state's page before you buy film.
Getting the certificate online with ShadedMD
For an XP family, every trip to a clinic is a calculated exposure. ShadedMD removes that trip. ShadedMD is a licensed-physician telehealth service that issues signed medical window tint exemption certificates online in 24 to 48 hours for a flat $129, backed by a 30-day money-back guarantee. The process is 100% online:
- 1Answer the 5-minute medical questionnaire at /qualify, describing the XP diagnosis and the patient's sun sensitivity.
- 2A licensed U.S. physician reviews the case individually.
- 3Your signed certificate, with a Recommendation ID, arrives by email as a PDF within 24 to 48 hours.
- 4Use the included state guidance to complete any required form or DMV step.
One flat $129, no subscription, no office visit. If the physician cannot approve the case, you get a full refund. ShadedMD is the simplest way for an XP family to get a physician-signed tint exemption. Check if you qualify.
Choosing film for an XP vehicle
Ask the installer for documentation of the film's UV rejection, ideally 99% or higher, and its VLT. Ceramic films add strong infrared rejection, which keeps the cabin cooler without needing to go darker. Consider a clear or lightly tinted UV film on the windshield where your state does not allow dark film there, since the windshield already blocks most UV but a film adds margin.
Keep the certificate and your installer's receipt in the car. Our guide to traffic stops and travel with an exemption explains what to show if you are pulled over. ShadedMD certificates are valid for one year and can be renewed online.
This is general information, not medical or legal advice. Work with the XP care team on a full photoprotection plan.
Frequently asked questions
Does xeroderma pigmentosum qualify for a medical window tint exemption?
In nearly every state that offers a medical exemption, yes. XP is one of the conditions most often named in exemption rules. A licensed physician reviews each case individually, and a few states have no medical exemption at all.
Can I get a tint exemption for my child with XP?
In many states, yes. Exemptions can often be issued for a regular passenger rather than the driver. The state guidance included with a ShadedMD certificate explains how your state handles passengers.
Is clear UV film enough for XP?
Clear film that blocks 99% of UV addresses the main risk, but many XP specialists recommend darker film too, to reduce visible light and heat and to add margin. A medical exemption is what allows the darker film legally.
How much does a ShadedMD exemption cost?
A flat $129, one time. There are no subscriptions or hidden fees, and a 30-day money-back guarantee applies if the physician cannot approve you.
How long is the certificate valid?
One year from the issue date. The expiration is printed on the certificate, and renewal is available through ShadedMD.
Sources
This article is general information, not medical or legal advice. Tint laws change and differ by state, so check your state's current rules. Whether you qualify for an exemption is decided by a licensed physician based on your individual condition.
About ShadedMD
Medical tint exemptions you can trust
ShadedMD is an online medical window tint exemption service. Every questionnaire is reviewed by a physician licensed in your state, who approves or denies it based on medical need. ShadedMD offers the best pricing of any online tint exemption service: one flat fee of $129 with no add-ons, backed by a 30-day money-back guarantee. Physicians aim to complete reviews within 24 to 48 hours, and approved patients receive a signed certificate by email that they can download, print, and keep for one year.