Dear Hair Restoration Physician and Associates,


1.  Based on feedback from last week’s email, I have edited the biphasic-dose-response graphic below to make it more readable; please see below.


2.  LaserCap® SPRING SWAP – with your next LaserCap order, we will swap out ANY one of your non-LaserCap devices for a LaserCap as as I am expanding my inventory of non-LaserCap devices to measure their power outputs (part of our ‘prp + photomed for hair regrowth’ registry trial planning).   Some of the more common non-LaserCap devices are organized in the graphic below, by calculated treatment dose (J/cm2).  And here are the SWAP parameters: swap for LaserCap80 with any purchase of 3 LaserCaps; swap for LaserCap224 with any purchase of 5 LaserCaps; swap for LaserCap300 with any purchase of 10 LaserCaps.



Michael Rabin, MD


(from Photomed Optics Lab) 
Biphasic photomed treatment dose-responses have been previously demonstrated (e.g., lllt in traumatic brain injury; hamblin et al).  In photomed for hair regrowth, the biphasic dose-response was thought to peak at around 4J/cm2 (similar to what had been previously described with photomed for wound healing). However, new research in photomed-induced proliferation of human dermal papilla cells shows in-vitro peak at 10J/cm2  (and with light-blocking effects of hair and skin, an in-vivo equivalent may be in the 20J/cm2 range or more).  In light of this new information, here’s where some common photomed devices for hair regrowth may lie on the revised dose-response curve:

A Biphasic Dose-Response Curve for Hair Regrowth


(from PRP Cell Lab)


Below are hematology and microscopic reviews of sample PRP preparations at 2x, 6x and 10x platelet concentrations.





Please see additional information for both photomed optics lab and prp cell lab at .  And please take our PRP-Preferences Survey (part of our ‘prp+photomed for hair regrowth’ registry trial planning).


Michael Rabin, MD, MBA, CEO
440 241 1846direct
860 201 1846fax


About LaserCap® Company – Transdermal Cap, Inc. was formed in 2006 by co-inventors Michael Rabin, MD and M.I.T.-trained optical physicist David Smith, PhD, in collaboration with Harvard-based photomedicine expert Michael Hamblin, PhD and internationally acclaimed hair restoration physician Robert Haber, MD, to develop innovative light-based devices for the Global Beauty & Health Industries. Its first commercial product is LaserCap® for women and men with thinning hair or at risk for thinning hair, a condition that affects up to 50% of adult women and 80% of adult men.  Patents pending, Copyright 2009 Transdermal Cap, Inc.