Hi I've been lashing about 18 mths now and find the most popular to be 'c' by far, 0.25 9, 11 & 13 mm. When I have used j curl in the past, customers have commented that they look a little bit too natural and so unless somebody wants a natural look I don't use them. If you use 0.25 too the customer usually gets a lovely mascara'd look without it looking too much.
Another time I use 'j' is when doing express lashes (a h Francis course) which is popular for parties/Xmas and can be done with odourless glue.
I was hoping to add the mink treatment to my list but ideally these need to be applied using a very fast setting glue - with fumes (wish I'd known this before I did the course)!!!, as I've never had a client react to odourless glue and so am not prepared to change (having seen some very unpleasant symptoms therapists are suffering). Am hoping that there will be a faster fume free glue released at some point.
Happy lashing xxxxxx