Your hair needs a good comb.

你的头发得好好梳理一下。

《牛津词典》

What have you done to your hair?

你的头发是怎么搞的？

《牛津词典》

The gel gives your hair a gloss.

发胶使你的头发有了光泽。

《牛津词典》

The thought of having to live alone in a house like that was so frightening it was enough to curl your hair.

VOA: special.2009.05.03

You're flogged 100 times and they pull out your hair and there's a monetary fine, and you do corvee, forced labor, for a month.

你应受100杖责，他们会拔去你的头发，还有罚金,同时还要服王家劳役一整个月。

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So we have like a lot of different products to like, help protect your hair from the sun and water

所以我们有很多产品来，比如，帮助保护头发不受阳光和水的伤害，

我的梦想是当发型师 - SpeakingMax英语口语达人

Finally, make sure you are well-scrubbed, your nails are clean and your hair is washed.

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The point of an interview is to let your qualifications shine, not your hair gel.

FORBES: Is Your 'Natural' Hairstyle Preventing You from Getting a Job?

Pollen transfers from your hair to your pillow, increasing your odds of breathing allergens in.

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