Hello! I think this is my very first post, but I had to come out of the lurker fog to give some input on this topic.
When I was 5 years-old a hairstylist told my curl-hating curly mother that in order to blow dry my hair she would need to chop off 10 inches of hair, leaving me with collarbone length hair. Then she and another stylist proceeded tackle my hair between both of them. Leaving me with fluffy, dull, short hair and my very first migraine.
Since then it took me 10 years to find a stylist that didn't take a look at my thick mane of hair and didn't suggest cutting it or straightning it so that they could cut down on blow drying time.
Tl;dr: Worst thing a stylist can do is see your shiny split-end free curls and say "Oh, your hair is so damaged, want me to cut off about 4 inches of it?"