The+Big+Question

=__The Big Question__=

Got a science question and you really want to know the answer? Ask it here and anyone can answer it!

Q1. How does hair gel/spray work? feliks

The key ingredient is a special kind of plastic, known by the letters PVP. This plastic is a good choice because it can be dissolved in water. That means it can be easily washed out of the hair later. When PVP is applied to the hair in either a gel or spray, it forms a hard coat on each hair, which makes the hair stiff. That’s what holds the hair in place. Mr A

Q2.