Hot irons are essential for styling but they can be pretty rough on hair. Fortunately, you can safeguard those strands from the harsh heat of your straightening iron with this smoothing serum from Fanola. It insulates the hair shaft with a protective film with a thick formulation that mitigates the effects of heat and maintains the moisture in the hair so you can straighten your hair without a worry. Never let fear of heat damage get between you and a great style again.