Instruct: Classify a given review into positive or negative sentiment.
Query: Maybe it doesn't work on fine hair

I've now had this product for six months, and used it about six times on my eyebrows. Each time there are a good amount of hairs left over that I have to pluck. I follow the instructions to a 't', and have tried every which way to get it to work (leaving the strip on longer, using more, using less, re-doing it, rubbing the strip harder, softer, etc.,) and it DOES get rid of some hair, but definitely not all of them. The results also don't last long - two weeks max and they're all grown back. Maybe it's b/c I have fine hair, but I'm hugely disappointed. It's also kinda messy to apply ('strings' everywhere), but cleanup is easy enough.