Flat Irons and Pregnancy

Pregnant woman with long hair
Photo: Nnree/Shutterstock
Q: Is it safe to use flat irons during pregnancy?
 
A: Yes, it's completely safe to use flat irons and other heat styling tools during pregnancy. Many expectant mothers worry unnecessarily about their hair care, but flat irons pose no risk to you or your developing baby when used properly.
 
The confusion often stems from legitimate concerns about chemical hair treatments during pregnancy. Unlike chemical processes such as perms, straighteners, or certain hair dyes that involve potentially harmful substances being absorbed through the scalp, flat irons work through a purely physical process that doesn't introduce any chemicals into your hair.
 
Understanding the difference between heat styling and chemical treatments can help put your mind at ease. When you use chemical services like perms or straightening treatments, harsh chemicals penetrate the hair shaft and break down the disulfide bonds within your hair's structure. These are the strong bonds that determine your hair's natural shape and texture. The chemicals then reform these bonds into a new pattern, creating lasting curls or straightness that can last for months.
 
Heat styling tools like flat irons work completely differently. They temporarily break the weaker physical bonds in your hair, specifically the salt bonds and hydrogen bonds, using controlled heat. When your hair cools down, these bonds naturally reform in the new shape you've created, whether that's pin-straight strands or bouncy curls. This process happens entirely on the surface level and doesn't involve any chemical absorption.
 
However, during pregnancy, your body undergoes significant hormonal changes that can dramatically affect your hair's texture, thickness, and behavior. Many women notice their hair becoming thicker, shinier, or developing a different curl pattern than usual. These changes occur because pregnancy hormones, particularly increased estrogen levels, extend the growth phase of your hair cycle and can alter the hair's protein structure.
 
These hormonal fluctuations are precisely why chemical treatments can be unpredictable during pregnancy. Your hair may not respond to perms, colors, or straighteners the way it normally would, potentially leading to uneven results, damage, or unexpected color outcomes. But, since heat styling doesn't rely on chemical reactions, it remains just as effective throughout your pregnancy.
 
Pregnant women with beautifully styled long hair
 
Many pregnant women find heat styling tools to be their best friend during this time. As your body changes and your energy levels fluctuate, having reliable tools that can quickly transform your hair can be invaluable for maintaining your confidence and feeling put-together.
 
Unlike chemical treatments that require salon visits and can take hours to complete, flat iron styling gives you complete control over your look and timing. You can achieve beautiful results at home, which is particularly helpful during the later stages of pregnancy when frequent salon visits become more challenging.
 
While flat irons are generally safe, there are a few situations where you should be extra careful. If you're experiencing severe morning sickness or dizziness, postpone heat styling until you're feeling more stable. The combination of standing for extended periods and exposure to heat could exacerbate these symptoms.
 
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See also:
 
Pregnancy and bio ionic straightening
 
Getting a perm while being pregnant
 
Is it safe to get foils in your hair when you are pregnant?
 
Hair coloring during pregnancy