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Understand before you buy. Even if it costs us the sale.

Eight spaces: the research with its sources, what the trials actually measured, how wavelengths behave, our selection rules, and a journal where we publish what we read. None of them contains a promise we cannot document.

Eight ways in

Where would you like to start?

If you are not sure, take the science: everything else hangs off it, and it is the page that explains why we refuse wording you will see elsewhere.

Where to start, depending on what you came for

  • You are wondering whether it works. Start with the benefits: nine results with their level of evidence, from best established to thinnest. Then Science for the full sources.
  • You already know you want one. Go to how it works for the dose, then to wavelengths for the area. Those two pages are enough to compare two devices honestly.
  • You are sceptical of this industry. You are right to be: our values list what we refuse to write and why — it is the page that is easiest to hold against us.