Why Choose the Capillus RX Duo?

The Capillus RX Duo is designed for patients who want a premium laser cap with broad scalp coverage and dual-wavelength technology.

The 650nm red laser light targets the scalp and hair follicles, while the 808nm near-infrared wavelength is designed to reach deeper supporting tissue. Together, these wavelengths provide a more comprehensive approach than older single-wavelength laser therapy devices.

The RX Duo is our first laser cap recommendation on the website because it offers advanced technology, strong coverage, and competitive pricing through St. Louis Hair Restoration.

Who Is a Good Candidate?

The Capillus RX Duo may be a good option if you have thinning hair rather than complete baldness, have early to moderate hereditary hair loss, want a non-surgical treatment option, want to maintain existing hair after a hair transplant, or can commit to consistent daily use.

Laser therapy works best when follicles are still present. If an area is completely bald, a laser cap is unlikely to create meaningful regrowth in that area.

Can the RX Duo Be Used After a Hair Transplant?

Yes. Many patients use laser therapy after hair transplant surgery as part of a long-term maintenance plan.

Many patients begin laser therapy approximately one week after hair transplant surgery, depending on their surgeon’s post-operative instructions.

Can the RX Duo Be Used With Other Hair Loss Treatments?

Yes. The Capillus RX Duo can often be used with other hair loss treatments, including topical minoxidil, oral minoxidil if prescribed, finasteride if appropriate, dutasteride if prescribed, and hair transplant surgery.

Hair loss is progressive, so many patients do best with a long-term maintenance plan rather than relying on one treatment alone.

How Long Does It Take to See Results?

Laser therapy results take time. Most patients should use the device consistently for several months before evaluating the result.

Some patients may notice reduced shedding first, followed by improvement in hair quality, thickness, or coverage over time. Consistency matters.

RX Duo vs Spectrum and TriSpectrum

St. Louis Hair Restoration also offers the Capillus Spectrum and Capillus TriSpectrum laser caps.

The RX Duo is our featured laser cap option and uses 330 medical-grade laser diodes with 650nm and 808nm dual-wavelength technology. The Spectrum uses 312 medical-grade laser diodes with 650nm and 808nm dual-wavelength technology. The TriSpectrum uses 312 medical-grade laser diodes across three wavelengths: 650nm, 780nm, and 808nm.

If you are unsure which option is best, we can help you compare the devices.

12-Month Satisfaction Option

Capillus laser caps purchased directly from St. Louis Hair Restoration may be eligible for a 12-month satisfaction option with a 50% refund if returned according to St. Louis Hair Restoration’s return policy.

Returned devices must be registered properly, returned in working condition, and include required accessories. Customer is responsible for return shipping unless otherwise stated.