Waste of Money. Unless you are independently wealthy, save your money. I bought one and started using it in February of 2014, along with generic Rogaine from Target. I can't say I had significant re-growth but, the rate of loss slowed (possibly the Rogaine) and I did notice my hair had more body. However, the product itself is a colossal waste of money and customer service sucks. After 14 months of use, mine stopped working. Theradome wants more than $100 for me to send it to them to apply to the cost of repairs!
My front load washer from Whirlpool has much better customer service! It is at least 10 years old and it just went on the fritz this week (6/08/15). Whirlpool is sending a tech to my house free of charge to see if the control panel needs replaced, or if the machine can be repaired.
Before buying a Theradome, go to the web and find the website by a man named Lou who made his own version of the Theradome for $60 and has a video showing you how to do the same. I have already ordered my lasers from the internet just like Lou directs in his video. Not only that, Lou claims in his post that he has noticed slight regrowth! I will let you know how Lou's device works once I get mine going. I don't anticipate any problem though, given that Lou's device uses the same types of lasers Theradome claims to use in theirs (blue light).
In short, unless you can afford to waste $900, don't buy a Theradome.
Bottom Line: No, I would not recommend this to a friend