Sidenote: Try to limit the number of times you use, in general, neral to prevent any damage that using a heat protectant can’t help.
Now, here are a few low priced but good brands. Please keep in mind each has a different consistency. You want to figure out what works best for your hair type. If you have fine hair, I would suggest using a spray. If you chose to use a serum, please use the product sparingly as it may weigh down your hair.
I use the first two whenever I blow dry or flat iron.
If you need a lighter heat protector, check out my heat protectors for fine hair