Flat Irons and Pregnancy
A: Of course. Most of the problems encountered by pregnant women with styling the hair come as a result of chemical services and the way medications and hormones will change the way the hair responds to those chemical services.
You see, with a perm or chemical straightener, the hair is made to curl (or hang straight) because the chemicals used break the disulfide bonds in the hair (the chemical side bonds) and reform them into the desired new formation.
However, with a heat appliance, the tools break the physical side bonds (the salt and hydrogen bonds) of the hair by using heat. When the hair cools again, the bonds reform in the new, desired shape, which allows the hair to hold the curl or stay straight as intended.
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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