Those with coarse and curly hair have it trimmed every 12 weeks.

毛糙的卷发：每3个月修剪一次

According to Fitzgerald, those who fall into this category don't need to get their hair cut very often.

菲茨杰拉德认为，毛糙卷发的人不用经常剪头发。

"We suggest those who have a tight curl and coarse texture to their hair push it closer to 12 weeks just because the natural oils of their scalp travel down the hair strand and the oils help them naturally maintain a healthier stronger hair follicle," she said.

她说：“我们建议头发很卷又毛糙的人每3个月理发一次，因为他们头皮的天然油脂可以输送到发丝，帮助他们保持毛囊健康强壮。”

If you have fine hair, you might want to get your hair cut every four to six weeks.

细软的头发：每4到6周修剪一次

Whether it's wavy or straight, you should get your strands trimmed every four to six weeks if you have fine hair, according to Fitzgerald. It's really all about appearance, since thinner hair can look limp or unhealthy without regular trims.

菲茨杰拉德说，如果你的头发细软，无论是卷的还是直的，每4到6周都应该去理一次发。这都是为了形象，因为稀薄的头发如果不定期修剪，看上去会软趴趴的不健康。

A visit to the salon every four weeks if you use heat tools in your hair a lot.

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