Blog: Guides, Science and Evidence Updates (Page 3)
Every article on the index, newest first. 73 articles.
RLT Home Total Spectrum MAX vs BlockBlueLight MEGA
Two top-five panels that both publish more measurement detail than most brands. Wavelength mix, irradiance disclosure, price and warranty compared.
Study Review: Red Light, Sleep and Melatonin (2012)
A 14-night, whole-body red-light trial in 20 elite athletes reported better sleep and higher melatonin than placebo. The design, gaps and panel gap.
Study Review: PBM for Diabetic Neuropathy in 200 Patients
A 200-patient trial tested a helium-neon laser on diabetic neuropathy for ten days. What the biomarkers and pain scores showed, and the gap to a home panel.
Hooga HG vs PRO vs ULTRA: Which Tier to Buy?
Hooga's HG300, PRO300 and ULTRA360 span $199 to $399. Here is what actually changes between the three tiers, spec by spec.
Study Review: The Lanzafame Male Hair Growth Trial (2013)
A sham-controlled 655nm helmet trial in 44 men found a 39% hair count increase versus sham. The design, the numbers and the panel gap explained.
Best Red Light Therapy Panels With 0% Financing
Which red light panel brands offer 0% financing or buy now pay later (Affirm, Shop Pay, Klarna, Afterpay), what their terms say, and our top three, ranked on how clearly the financing is stated and on published specs and terms.
Best Red Light Therapy Panels by Warranty Length
Every red light therapy panel brand's warranty, read on its own site - length, what is covered, who pays claim shipping, registration and prorating traps - with every panel warranty longer than 3 years ranked, and the best of the 3-year brands.
Best Red Light Panels: Free Trial, No Restocking Fee
Which red light therapy panel brands offer a real home trial - the return window, restocking fees, who pays return shipping, condition rules and open-box traps, read on each brand's own site - with the five best trial policies ranked on the terms alone.
MitoPRO 1500X vs BioMax 900: Mid-Size Flagships
The MitoPRO 1500X and PlatinumLED BioMax 900 both cost $1,299. Here is where the wavelength mix, irradiance disclosure and return terms actually differ.
Best Red Light Panels With Military and Service Discounts
Which red light therapy panel brands run verified discount programs for military, veterans, first responders, healthcare workers, teachers, students and seniors, how much they take off, how to verify (ID.me, GovX ID, VerifyPass), and every program with a stated percentage ranked.
The Red Light Panel Brand Landscape: All 41 Brands
One row per brand, all 41 tracked red light therapy panel makers, on country, price, wavelengths, irradiance disclosure, warranty and trial terms.
Behind the Database: How This Site Verifies Specs
How this site sources, rechecks and labels its 188-device database, verifies every PMID against PubMed, and handles affiliate links.
Study Review: Tumilty's Tendinopathy Meta-Analysis
A 2010 meta-analysis of 25 tendon trials found positive results tracked with dosages close to WALT guidelines. Here is what it actually found.
Study Review: 790nm Light for Knee Osteoarthritis, WALT Dose
A three-arm randomized trial used 790nm at 4 J per point across nine knee sites. What it reported, what it left out, and what it means for a panel.
Is Red Light Therapy Safe? What the Evidence Shows
Reported side effects across red light therapy trials, the tumor-safety review in oncology patients, heat and eye cautions, and what has not been studied.
Peak Wavelength and FWHM: What '660nm' Really Means on a Spec Sheet
A 660nm LED does not emit a single wavelength. Peak wavelength and FWHM explain why panels labeled differently can overlap almost completely.
Red Light for Knee Osteoarthritis: Trials and Meta-Analysis
A meta-analysis of 22 placebo-controlled trials and two randomized trials on knee osteoarthritis, the doses that worked, and what they mean for a home panel.
Irradiance vs Total Power: Which Number Matters?
Irradiance tells you the dose at one spot; total power tells you whole-panel output. Why they diverge, and which one to compare when panels differ in size.
Best HSA/FSA Eligible Red Light Therapy Panels
Which red light panel brands take HSA/FSA payment, how the letter of medical necessity works, and three award picks plus a deep-tissue option compared on specs and terms.
How to Choose a Red Light Panel: A 7-Step Checklist
A 7-step checklist for choosing a red light therapy panel, from goal and wavelengths to method-labeled irradiance, coverage, terms and price.
Bestqool vs Comfytemp: The Budget Panel Battle
Bestqool BQ40 and Comfytemp K4037 compared on price, wavelengths, irradiance claims, warranty and return terms.
How to Read the Irradiance Labels on This Site
The three irradiance labels used on every panel page, what each means, and how to compare figures fairly.
What Is Photobiomodulation? (And Why It Replaced "LLLT")
Photobiomodulation replaced "LLLT" in 2015 once LED research showed the effect works without a laser. The history, the studies and the mechanism.
How Often Should You Use Red Light Therapy?
What the trials actually used, from twice a week for skin (confirmed by a 2025 head-to-head trial) to nightly for sleep, and how to turn it into a home schedule.