Went to my local mall with my grandma about 10 years ago as a teenager and was approached by a salesman. He told me he’d try it on a piece of my hair for free and would give me a free sample of serum if I let him. My grandma was a retired hair dresser and we had time so we said why not. I have super thick hair, with thick strands that are curly/wavy. It took one time over a piece for it to be sleek (a cheaper one I have to go over a piece several times) and we were sold. She got it for me for my birthday/Christmas present that year. 10 years later this baby still works like a charm and I will never use another one. It’s been on every school trip, every summer camp, every sleepover. My friends ask to use it when I have it. Price is completely worth it. Could not recommend more.