There has been quite allot said about the product in the past.
If you are getting so many lines youa re contemplating buying this product then you need to stop getting the lines. If you search 'chasing the line' you will get help to stop the problem starting in the first place.
I bought this some years ago and didn't particularly like it. As Geeg says, just a bit of practice on those lines and you'll wonder why you ever thought about trying it. I do believe you actually get a bit of a yellow line there when it's used but I could be wrong.
Anyway, this is just my opinion of it - some people here may have used it and loved it. It's called Line Out and you can buy it from NSI.
i was told never to use this as you can actually help bacteria breedunder the slight lifting that you apply it to. So although it will cover it up its not such a good idea i don't think. Better to get rid of the line by filing correctly rather than use line out. Only my opinion.