Personal Notes

Question: How many times should you use laser therapy a week? -ANSWERED!

By OverMachoGrande
Jul 05, 2008

This question comes up a lot in the forums.  The simple, quick answer from a summary of what you see all over the internet is that…

1) three times a week is probably the maximum amount of times that you should do it (and perhaps most beneficial… remember it’s “dose dependent”!),

2) you should have at least a full “day off” in between treatment sessions,

3) and to use it without the proper rest can cause an “acclimation of the tissue” to the therapy, resulting in the treatment being less effective.

Therefore, I would think that Monday/Wednesday/Friday is probably pretty optimal, especially since you have two full “off days” to rest at the end of the week to make sure that you’ve fully recuperated by the start of next week.

Now, reading that in multiple places and drawing up a three point summary is one thing -and that is definitely the advice that I stand behind- but actually putting your hands on the corroborating scientific data is another!  Therefore, this section will be a “work in progress”, and when I find more concrete sources I will add them here so there will be no doubts.

The first one is from the study “Effect of Multiple Exposures of Low-Level Laser Therapy on the Cellular Responses of Wounded Human Skin Fibroblasts”, and it addresses the fact that it’s definitely in our best interest to get the proper REST between dosages.

Here is a chart from this study:

The study states that “Laser therapy has been shown to be cumulative (the dose from one treatment lasts some time, and what “remains” of the dose is added to the dose at the next treatment), it is vital that treatments are not too close together, so as to avoid a situation where the accumulated dose eventually ends up above the biostimulating range or even in the bioinhibitory range, with consequently poorer results.”

So basically, your tissue can still be “charged” with the energy and it can lead to over-doing it if you attempt multiple dosages within too short of a period.  It’s safe to say from this that a full “day off” between sessions would definitely be in our best interest!  Just like when you workout your body, you need to have a time period (a minimum of 48 hours) to fully recover the muscle group you just exercised in order to get the full benefits.

By the way, on a side note… if you read the study you find that the biostimulation ranges were observed at 2.5 to 5 joules per centimeter squared dosage levels (this should sound familiar to you by now since it’s not far from the 3-6 average we’ve repeatedly established… and try to do that with a standard laser brush! Ha ha! Good luck!), and with an inhibitory dose at 16 joules.  NONE OF THIS IS NEWS TO US!

As I said, I’ll add more to this when I find this stuff (I wish I’d kept track of it last year), and if anyone has any studies (I’m talking hard scientific evidence here) I’d be happy to see them, and I’ll update the site!


PS - I’m sure you knew this by now, but please note that I’m NOT talking about standard laser brushes here, I’m talking about devices that actually give the proper amount of energy for biostimulation! 

As my “Second Cardinal Rule of Laser Therapy for Hair Loss” states… with a standard laser comb, you need to worry about getting the NECESSARY exposure -not worry about OVER-exposure.  If I had to guess, I think that making an (albeit feeble) attempt at getting the proper energy trumps the “tissue acclimation” aspect.

OverMachoGrande's avatar

Posted by OverMachoGrande
"The Grand Duke of Laser Hell"
07/05/08 at 10:27 PM

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