An extensive test of over 50 heat protectant sprays was conducted to determine the most effective products for shielding hair from heat damage caused by styling tools. The testing process involved evaluating various sprays, balms, and serums from popular brands, focusing on their ability to combat split ends, breakage, lack of shine, and dried-out cuticles.

The primary goal was to identify formulas that could withstand high heat from flat irons and blow dryers, as well as determine their suitability for use on both dry and damp hair. The investigation also considered the products' ability to fight frizz.

According to the tester, who evaluates flat irons professionally, the need for effective heat protection became apparent due to the frequent heat styling her hair undergoes. She noted that while she had been using heat protectant sprays for years, she had not previously assessed their effectiveness for specific purposes.

The top picks from the testing included Bumble and Bumble Hairdresser's Invisible Oil Heat/UV Protective Primer, identified as the best overall product and available at Nordstrom. Oribe Gold Lust Dry Heat Protectant Spray was recognized as the best option for dry hair and can be found on Amazon. Hot Tools Pro Artist Heat Lacquer Seal Thermal Activated Hi-Shine Spray was also highlighted as a great dry hair option, available on Amazon. Drybar Prep Rally Prime Prep Detangler was chosen as the best for damp hair and is sold on Amazon.

The findings provide consumers with data-driven recommendations for selecting heat protectant sprays that align with their specific hair types and styling needs. The results underscore the importance of using appropriate heat protection to maintain hair health and prevent damage from heat styling tools.