I definitely use a heat protectant, I love the smell and the texture it leaves in my hair. It also gives my hair a bit of shine. An added bonus is it’s a Liquid Keratin so heat actually helps it to smooth out frizz. So when I straighten, it looks extra glossy and healthy. I never use to use a heat protectant before and my hair started to slowly look worse year after year, now it’s become a must have for me. Think of a heat protectant the same way you thinl of an SPF sunscreen for your face. In the same way it will protect you from the damages caused by heat/UV rays. I use TGA Professional Liquid Keratin Leave In Treatment with Thermal Protection. So it’s a treatment and protectant. I’ve used it for about 6 months now, love the way my hair is smoother and healthier. I tried a few other brands before but nothing like this so I’ll stick to this one. As you get older, your hair can lose its shine. If it hasn’t happened yet then your lucky. I’m in my mid 30’s so it’s about time I started taking care of my hair.