Hair fibers

[Upshall]

I’m a newbie for hair fibers;

which brand is the best? 

Does it come in different forms? Spray etc..

Do you need to buy an applicator with it? 

Does it work?

does it stay in the rain? And wind? 

[Pete-from-Farjo]

I've tried them all and have generally found the cheap unbranded ones as effective as the well known more expensive ones. They're all essentially the same. 

They do work, though if you're using them near the hairline you may occasionally get some stray fibres dropping down onto your forehead.