I would like a shampoo and set.
我想洗头，做个头发。

What style do you want?
你想做什么样的？

I'd like to try a new hair style. Could you show me some pictures of hair styles?
我想换个新发型。你能不能给我看些发型式样的照片？

We have various models: hair bobbed, hair sweptback, chaplet hair style, shoulder-length hair style, hair done in a bun.
我们有各种各样的发型，如剪短发、后掠式、盘花冠式、齐肩式，还可以把头发挽成发髻。

Please give me the style in this picture here but make the wave longer. I would like hair spray, please.
请你按这张照片上的发型做，波浪烫长些。再喷些发胶。

Your hair dryer is too hot. Would you adjust it, please?
吹风太热了，麻烦你调一下吧。

Please have a look.
好了，您看一看。

Beautifully done. Please trim my eyebrows and darken them.
做得好极了。麻烦你帮我把眉毛修一下，再画一下吧。

Would you like a manicure?
您还要修一下指甲吗？

Yes, use a light nail varnish, please.
好的，用浅色指甲油吧。

What would you say if I have my hair dyed?
我要把头发染了，你觉得怎么样？

It depends on what color you choose.
那要看你染成什么颜色了。