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How many times a week can you heat style your hair?

There is no fixed safe number of styling sessions per week: what counts is your total heat dose (temperature, contact time, number of passes and how wet your hair is)....

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How far should you hold the hairdryer from your hair?

Hold your hairdryer about 15 centimetres from your hair and keep it moving: in lab measurements the air was 47 °C at 15 cm, 61 °C at 10 cm and...

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What does the cool shot on your hairdryer actually do, and when should you use it?

The cool shot on your hairdryer does not close any cuticles: it cools your hair down so the shape you just created sets. Read what cool air does and does...

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Is air-drying really better for your hair than blow-drying?

Air-drying isn't automatically safer: your hair stays swollen and vulnerable for hours, and in lab research it was actually air-drying that damaged the glue layer inside the hair fibre. Here's...

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Does cold water really close your hair cuticles? Here's what actually happens

No: hair cuticles are dead keratin cells without muscles and don't respond to cold water. Water and pH move your cuticles, a cold rinse gave no extra shine in testing,...

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Curls with a diffuser: how to dry them step by step

Drying curls with a diffuser without frizz? 7 steps with the right settings, the distance per phase and 6 mistakes that cost curl definition. Read on.

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How do you get more volume in your hair? Here's how, from washing to finish

More volume in your hair starts with how you wash and dry it. Walk through the 6 methods and find out which habits are actually flattening your volume.

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Why does my hair sizzle when I style it, and is that harmful?

That sizzling sound while styling is water in your hair boiling and evaporating explosively. It can cause bubbles inside the hair shaft (bubble hair), damage that never repairs itself. Here's...

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