Well I do not know how helpful that person really is but sometimes we can each give out wrong bits and bobs! Perhaps she would like to see it made illegal....
I have done waxing both ways. First as a day course for which I received a certificate which was recognised by my insurance company. Job done. All legal and above board.
As to the merits of a one day course I think they can be really good for some people. It was an intensive day that covered anatomy and physiology as well as health and safety and then waxing every part of the body except intimate but including bikini. We were given a very comprehensive manual with everything taught in it. Sure it was too much to cover in one day but then people like myself went off and practised, practised and practised before launching myself on an unsuspecting public. I am still on a learning curve as, I think, we all are to some extent.
On the other hand, I am now at college doing an NVQ Level 2 which is not necessarily the sure fire way to learn either. I see colleagues who have not yet had hands on practise waxing some parts of the body for one reason or another, who are scared witless, or pull off skin after being at it for weeks and weeks. A college course is not the holy grail either!
In the end, I think learning then time and practise and continual learning is the greatest. This Salon Geek is a brilliant place to learn so much from reading others issues or questions and possible suggestions or answers. It does not mean that everything is right, just that like anything in life we should listen and think about what is being said and take on board with an open mind.
Sorry about the soap box. Not sure where that jumped out from!
:hug: