(1)
Hairstyle and hair colour are a vehicle for fashion a means of self-expression.
vehicle for = ~の伝達手段
髪型や髪の色はファションであり自分を表現する手段の一つでもあります
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(2)
In japan, hairstyles have been deeply linked to people's pride and way of life.
日本人にとって、ヘアスタイルとは、その人の誇りや生き方とも深く結びついたものなのです
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I think It's not only Japanese but also the European were vehicle for fashion and a means of self-expression when it's in the 16-17 centuly.
16th century. In the noble class were wearing wig