If any type of hot tool makes an appearance in your beauty routine, you’ll want to find the best heat protectant for hair to go along with it. Whether your styler of choice is a blow-dryer, straightener, thermal brush, or curling iron (or, a futuristic Dyson device that pairs several of these things together), your hair will definitely thank you if you prep it beforehand with a protective covering.

While most formulas start off with the same basic purpose (shielding your style from heat up to 450 degrees Fahrenheit), they differ in bonus effects. That’s where our favorite database comes in: online shopping reviews that reveal which bottles do more than the rest. Common complaints are: mists that dispense unevenly, serums that weigh your final style down, formulas that smell like something’s burning, or sprays that leave behind a crunchy residue. We’re tossing all those out in favor of the options that impart lightweight shine and smoothness, while also cutting down on dry time and sealing split ends. Below, the 19 best heat protectants for hair that won’t let you—or your flatiron—down.

Reviews have been edited and condensed for clarity.