A straightening iron works by breaking hydrogen bonds in the hair. While very effective, it can damage your hair in the long run. If you are looking for a safer and cheaper alternative to getting sleek, frizz-free locks, consider a hair straightening brush. These electric brushes that straighten hair are considered the new generation of hair straighteners, easier to use than a flat iron and heat up to 450F while emitting negative ions in order to straighten hair in 8 to 10 seconds.
They have a triple action system: they detangle, straighten and increase natural hair shine. They seal the hair cuticle reducing frizziness and increasing hair manageability. The consensus is straightening brushes work in a fraction of the time compared to classical straighteners, although they are less efficient in creating a perfect sleek look.