As im reading each post on this thread I want to respond & give helpful advice that will benefit you professional and financially in your quest to get into the aesthetic side of medicine!
Instead I will simply begin by stating a couple things (and later be happy to keep answering the other questions).
* Paying for aesthetic training on lasers & actual cosmetology type procedures is the wrong focus for an RN! Once employeed, training will be provided on lasers & equipment by the manufacturer or your employer. The only type of training that would even benefit you before getting your first aesthetic med position, is possibly injectables. Which if you are an experienced RN & have a knack for the needle.. this will be a breeze. Contacting the manufurer of these injectables to seek treatment is a great source. Allergan (maker of botox) is based in SoCal but has offices throughout the U.S.
*Before deciding to BE YOUR OWN BOSS with a medspa set up, first gain experience by working at one - hands on training/experience is the best way. If unsure of the BUSINESS aspect, hiring a consultant to assist you in developing your new business is not a bad idea!
*Each State has different regulations when it comes to aesthetics and what is "medical" and who can do what. You, as an RN, want to stick with the MEDICAL (more $$) portion of this industry as opposed to becoming aestheticians or learning how to do $50 facials and applying makeup!!! YOUR MEDICAL PROFESSIONALS ALREADY - LETS NOT HAVE YOU DOWNGRADE WHEN YOU HAVE THE LICENSE ALREADY TO DO THE MORE PROFITABLE PROCEDURES!!

* An RN inexperienced in aesthetic medical procedures that can SELL me on her self during an interview, will be the one that Im confident will be able to promote and sell the clinics treatments, not just do them! Youre an RN, so a hiring manager know's youre capable of treating their patients safely after training... BUT CAN YOU SELL WHAT YOUR ADMINISTERING? Its a key skill that alot of you are overlooking and what will be the difference in your future success in Aesthetic medicine. So if youre confident to go into an interview with no formal aesthetic training, no actual aesthetic experience, yet you KNOW you are perfect to do these procedures and you want everyone to have them done!!!! Then youre more qualified than the person who went to a class to learn about facials and a good company or clinic will hire you - AS IS!! AS AN EXPERIENCED RN - NOT AESTHETICIAN!
I could go on and on ... lol
I've interviewed plenty of nurses for these positions some of you seek and I've consultanted and trained many who have branched out on their own. I truely wish you all well...
and the best advice i can give in general is for you to be COST affective with your sesires for "training on procedures" . Alot get it for free so you spending your money on it and not having much left over for your marketing needs - THAT IS A BIG MISTAKE when opening your own.
For those who simply seek employment - GO APPLY WITH CONFIDENCE
Those starting their own company - hire a consultant, even if just for a day as opposed to fully (to keep cost down) and get the info you need to start RIGHT! Its a competitive business, you dont want to fail before you've even begun.
I'LL BE BACK SOON TO ANSWER MORE QUESTIONS.
In the meantime, you can find info on your state's government, commerce or health department webpage on legalities.
Another no cost source is the manufacturers you are buying your equipment from!! They're very helpful before & during the potential sales process ;-) And if they really like you they'll get you in touch with the right info and people. Note: ive done pro-bono consulting after reps begged me to help their customers whom they felt were not going to succeed due to lack of knowledge.
So use them, especially if you're gonna buy things from them.
If you really dont know where to tart, just let me know where youre looking to work, what your questions are and i'll do my best to point you in the right, least costly direction.
Have a grea day.
OH, JUST IN CASE YOU WERE WONDERING:
** My current career (that i'll be putting on pause to seek a nursing degree this fall) is as a national Medical Aesthetic Management Consultant, specializing in medical business development, training, marketing, support and consultative sales training.