The Effects of Blowdrying on Natural Hair

By Jc of The Natural Haven

Does blow drying on cool damage your hair?

On a journey to find the answer above I came across a lovely little scientific study (J Soc Cosmet Chem, pp 27-36, 1981) which showed that even with low temperature blow drying hair never gets back to its original moisture level until it is soaked in water then air dried or placed at a much higher humidity.

In other words, heat drying your hair actually does dry your hair out.  To explain this, I will start off with a reminder of the basic structure of hair.

This is what happens when hair is wet through washing. Water travels into the cortex.

When hair is wet, there are two options to dry it: air drying and heat drying.

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  • Ashley

    I have been blowing drying my hair to get stretch to it because I don’t feel like putting a lot of time into my hair. But I have noticed that my hair is super char. I know now that I have to alternate between both drying and drying.

  • Leethia Mitchell

    I just have to say that if you are blow drying to put an under curl in your hair with a round brush then you should blow dry facing down the hair shaft so that you are not going against the cuticle. And your hair should be 90 % dry before you blow dry to style doesn’t matter what type of hair you have. -Cosmetology student :-) P.S. I have an example down below

    • Honey

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