After a number of posts about lasers I went to my laser people and said that there is a lot of confusion in the community about laser hair removal and what is effective and what isn't.
It was an interesting discussion. I get zapped by Registered Nurses in a medical laser studio. They run medical lasers, they can only be bought with people with medical qualifications (at least in Australia). They emit entirely in the red region of the spectrum, which is the region of energy you need to destroy melanated (?) hair follicles. They give off a serious amount of energy and are very easily capable of giving skin burns. I receive 28 joules per square centimetre across my face. No home laser gets anywhere near this. The lasers available to beauticians and hairdressers (in Australia) have limited spectral response in the red part of the emission spectra. So they are OK for treating skin complaints etc, but of little use on hair removal. OK if you have only a little hair they may be OK but for most of us girls who have been cursed with facial hair they will do nothing or spend a long time to do something. If a laser has 10% red output compared to 100% output one would expect to be zapped 10 times more. For ten times the cost.
I think some of the comments that have come through about success or lack of it following laser, may be due to what product is being use on the individual.
I was told that a Duet IPL medical laser costs about $150,000 - $175,000. They of course will be just as efficient as a home bought $200 - $500 laser.
The damage to a hair follicle takes some time to be seen. It isn't by any means instant. Colouring the hair follicle with any of the products is a total waste of time and will not do anything, you colour the hair, not the cells. You need to kill the cells that grow the hair. Otherwise the cells grow another hair. The hair follicle is a complex little beast. spraying " Go Away Hair" product at $X/ bottle will make the sales people quite happy and do very little for you.
I think the take home message was if it sounds too good to be true. It is.
Good laser, and I regard mine as good, is very effective. If you have the right skin and hair type. I have now had 5 sessions. The facial hair has gone except for some upper lip
we concentrated on that last time and it hurt, she wanted to do a second pass but I couldn't take it. First time I've backed out of anything

, it is a week later and it still hurts. but 50-70% of my upper lip hair has gone. I have no idea why this session hurt so much, but we think it may be hormonal 'cos I do have pathetic and non-predictable menstrual cycles.
I have also been told straight out that laser will not remove grey or white hairs and they need electrolysis. Don't even bother and tell your friends if any laser tech says that it will work they are ripping you off.
And after laser sunscreen and moisturiser .
Hope this helps
Cindy