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Why You Should Use Heat Protectant Sprays + 5 Products We Recommend

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We’ve all been there. You spend ages getting your hair perfect, only to have it turn into a tangled mess after a blow-dry session. The culprit? Heat damage. As someone who used to be a chronic heat-styling offender, I can attest to the toll it takes on your hair. It becomes dry, brittle, and prone to breakage – the complete opposite of the sleek, healthy look you were aiming for.

The science behind it is simple. Your hair is made of keratin, a protein that gives it strength and structure. When you blast your hair with heat (think anything above 300°F or 150°C), it disrupts the bonds holding those keratin strands together. The result? Split ends, frizz, and overall lackluster hair.

The good news is that with a heat protectant spray, you can create a barrier around each hair strand. This barrier acts like a shield, deflecting heat and preventing it from penetrating deep into the hair shaft where the most significant damage occurs. Many heat protectant sprays are also formulated with hydrating ingredients like silicones, panthenol, and glycerin. These ingredients help lock in moisture and prevent your hair from drying out under the heat. Here’s what else you can expect:

  • Reduced Frizz: Heat can wreak havoc on your hair’s cuticle (the outer layer), making it raised and uneven. Heat protectant sprays help smooth down the cuticle, resulting in smoother, frizz-free hair.
  • Enhanced Shine: Healthy, hydrated hair naturally reflects light, giving it a beautiful shine. Heat protectant sprays, by preventing moisture loss, can boost your hair’s natural shine.
  • Longer-Lasting Style: Heat styling can loosen your hairstyle over time. Some heat protectant sprays contain ingredients that help your style hold for longer, so you can enjoy those perfect curls or sleek blowouts for an extended period.

Below are so some of the best heat protectant sprays on the market to help you find the perfect one for your hair type and styling needs.

Best Heat Protectant Sprays


Bumble & Bumble Hairdresser’s Invisible Oil Heat/UV Protective Primer

If you’re looking for a one-stop shop for heat and UV protection, hydration, and frizz control, Bumble and Bumble’s Invisible Oil is a dream come true. This multitasking spray is formulated with a featherlight blend of six oils (coconut, argan, grape seed, macadamia nut, sweet almond, and safflower seed oils) that nourishes, smooths, and adds shine to all hair types. Unlike some heat protectant sprays that focus solely on heat styling, Bumble and Bumble’s offers year-round protection. The UV protection makes it ideal for summer days at the beach, while the frizz-fighting properties come in handy during those humid winter months.

Note: The product claims to reduce frizz by 50% and help color last up to 16 washes! It’s a salon-quality product and comes with a higher price tag compared to some drugstore options—but it’s worth every penny.

Bumble & Bumble Heat Protectant Spray


L’Oreal Paris Heat Slayer Pre-Iron Spray

Looking for a drugstore option that delivers? Look no further than L’Oreal Elvive Dream Lengths Heat Slayer. This lightweight spray protects against scorching temperatures up to 450°F, while simultaneously reducing frizz and infusing long hair with hydration for a sleek, three-day style. Plus, it’s free of sulfates, parabens, and dyes, making it a gentle choice for most hair types. Keep in mind, this spray is particularly formulated for long hair, so those with shorter styles might find a more targeted option beneficial.

L'Oreal Paris Elvive Dream Lengths Heat Slayer Pre-Iron Spray


Sun Bum Heat Protector Spray

Calling all beach bunnies! Sun Bum Heat Protector Spray is your summer hair savior. This lightweight formula, infused with sea kelp and Tahitian Noni extracts, shields hair from frizz-causing humidity and heat damage while dramatically reducing blow-drying time. Plus, it boasts a delightful tropical scent that transports you straight to the beach. However, be mindful of overapplication, especially on fine hair, as it can leave a slightly greasy feel.

Sun Bum Heat Protector Spray


BondiBoost Heat Protectant Spray

If you’re looking for a clean and heat-protective hair spray, BondiBoost is your answer. This vegan and cruelty-free formula boasts a unique blend of Australian botanicals, including aloe vera and jojoba oil, to not only shield hair from heat up to 450°F but also actively improve the look of existing damage. Clinical studies show an impressive 86% reduction in split ends after just one use! Plus, it’s free of silicones, sulfates, and parabens, making it ideal for those with sensitive scalps or hair prone to product buildup. However, this spray may not be the best choice for those with very greasy hair, as some reviewers have found it slightly flattening.

BondiBoost Heat Protectant Spray


Biolage Strength Recovery Leave-In Conditioner Spray

Color-treated hair often requires extra TLC, and Biolage Strength Recovery Spray delivers. This leave-in conditioner boasts heat protection alongside its core function of strengthening and detangling. It’s infused with 100% vegan squalane, a natural emollient that repairs and protects sensitized hair. The lightweight formula leaves hair silky, manageable, and 82% more manageable after just one use. Plus, it’s paraben-free, sulfate-free, and color-safe, making it a gentle yet effective choice for maintaining vibrant, healthy color-treated hair.

Biolage Strength Recovery Leave-In Conditioner Spray

The Final Verdict

The best heat protectant spray for you depends on your hair type, styling habits, and budget. Consider these factors when making your choice:

  • Hair Type: Fine hair might benefit from a lightweight formula like Sun Bum or Biolage, while thick hair can handle a richer formula like Bumble and Bumble.
  • Heat Styling Habits: If you frequently use high heat tools, a strong protectant like Bumble and Bumble is ideal.
  • Budget: Drugstore options like L’Oreal Elvive offer good value, while salon-quality products like Bumble and Bumble provide a more luxurious experience.

Our Winner

While all these sprays are worthy contenders, Bumble and Bumble’s Invisible Oil stands out for its impressive versatility. It’s the best heat protectant spray, offering a powerful combination of heat and UV protection, frizz control, hydration, and shine. Whether you’re a seasoned heat-styling pro or a casual hair enthusiast, this spray is an investment in the long-term health and beauty of your hair. No matter what spray you choose, remember – consistent use is key to keeping your hair healthy and heat-styling happy!

Read next: Are You Traveling A Lot? We Found The Perfect Hair Dryer For You

Who wrote this?
Picture of Ana Vasilescu
Ana Vasilescu
Ana Vasilescu is the founder of Women's Concepts and a certified skincare consultant. She has over five years of experience working in the beauty editorial industry and over a decade as an acne sufferer. With a background in dermatological research, Ana brings a wealth of expertise to a diverse range of topics, from buzzy ingredients to anti-aging and acne advice. She holds a BA in Sociology and Political Sciences. Find her on LinkedIn or Instagram.
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