Do you straight iron or curl your hair every day? Well, it’s time to refrain yourself from grabbing that straight iron and curling iron every single day. Excessive heat will burn hair, thus, damaging the hair without even noticing it.
I’ve known a couple of people who has to have their hair either straightened or curled and their hair has become dull, dry, and has produced plenty of split-ends. Hair is sensitive to heat, especially if the hair is fine and thin.
People who straight or curl iron their hair is literally burning their hair strands (without the actual fire). With extreme heat on hair, the hair cells are mutated and the hair changes its structure. Dana Oliver, from The Huffington Post, spoke with Dr. Jessica Krant, M.D., M.P.H., founder of Art of Dermatology about what straight ironing does to hair. Oliver mentions that there are two main layers of a hair strand, which are the inner core and the outer coating. But to go into more depth, hair can be in three layers: the cortex, cuticle, and medulla. Dr. Krant states that healthy hair contains “’water-and-air filled medulla and a smooth cuticle.’” With heat pressing into each strand of hair when straightening or curling, it damages these layers, leaving the hair less bright and shiny.
Using heat to style hair a few times probably will not severely damage the hair, but if hair is in contact with high heat excessively, then the hair will soon be dry and brittle with split-ends. Dr. Krant mentions that once the hair is damaged, it cannot be covered without cutting the hair.
But, on the bright side, Dr. Paradi Mirmirani, M.D., notes that damage is done to the hair fiber and not the follicle (the root). So when new hair starts to grow from the roots, the hair will be back to normal.
Try using a heat protectant spray before applying a straight or curling iron onto hair as it can help prevent the hair from fast breakage.