Shaving removes the tapered end of the hair so it feels sharp and stubbly when it appears again above the skin.Since you are a registrant located in Canada, you are required to charge and remit the G.S.T.
The hair waxing action does cause the skin to sting and many find a soothing skin healing cream to be helpful afterwards. Decide on an area of marketing that interests you. Not every business will benefit from having a web presence, but most will.
At present no single method qualifies in all those areas. You have to start marketing the products and getting people to your website! Not only is it critical to determine whether a taxable sale was made in Canada or not, but also where in Canada.