Vielight X-Plus 4: Intranasal Red Light Therapy Device

The Vielight X-Plus 4 is an intranasal and systemic photobiomodulation device that delivers gentle red and near infrared light to support the body's innate immune system and overall systemic wellness. It pairs a 633nm nasal applicator with an 810nm thymus gland module, targeting two areas central to immune and circulatory health.

How it supports systemic wellness

The nose is one of the most effective sites for photobiomodulation: it has a dense network of blood capillaries, making it an efficient gateway for delivering light energy to the circulatory system. The X-Plus 4 stimulates the nasal vasculature with its 633nm applicator while the 810nm module addresses the thymus gland, a key part of immune function, to support the body's natural defenses.

What it targets

• Nasal vasculature, via the 633nm intranasal applicator
• Thymus gland, via the 810nm body module
• Cerebellum and occipital lobe areas

Specifications

• Body module: 810nm at 50 mW/cm²
• Head module: 25 mW/cm²
• Intranasal LED: 633nm at 10 mW/cm²
• LED power: 1000 mW per module
• Medical grade certification: ISO13485 and MDSAP
• Safety certification: TÜV Rheinland

What's in the box

633nm nasal applicator, 810nm thymus gland module, one carry case, and one silicon sleeve.

Using your X-Plus 4

Each session runs 20 minutes. The general recommendation is once a day, six days a week. The device is designed for simple, comfortable home use.

The research behind Vielight

Vielight has the most published independent research in the field of photobiomodulation, with over 35 published and ongoing clinical trials behind its technology. Vielight's related medical device, the RX-Plus, which shares similar characteristics, has been studied in areas including upper respiratory viral recovery and immunity. We share Vielight's research as context for how the technology was developed, rather than as a promise of specific outcomes from this wellness device.

Contraindications and use

Vielight devices are well tolerated by most people. They are not recommended for anyone with active brain bleeds or a history of seizures. If you are pregnant, consult your healthcare provider before use. Some users notice mild, temporary effects such as a headache, dizziness, or slight discomfort, which generally subside as the body adjusts.

General wellness device. Not intended to diagnose, treat, or cure any disease.