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Best Non-Toxic Heat Protectants

We vetted heat protectants against the Welpr Standard and here are our top picks.

Camille May

Camille May

Cofounder & Product Curator

Olushola M. Awoyemi

Olushola M. Awoyemi

Medical Reviewer, PhD

Here's what we look for:

  • Simple formulations using fully natural or safe synthetic ingredients
  • No parabens, PEGs, phthalates, harsh sulfates, BHA/BHT, artificial dyes, formaldehyde or formaldehyde releasers, or undisclosed synthetic fragrance (unless certified safe)
  • Minimal, necessary preservatives only
  • Trusted third-party certifications when available
  • Transparent sourcing, ingredients, and manufacturing practices

Best Non-Toxic Heat Protectants

On Welpr, terms like "non-toxic," "safer," "cleaner," "healthier," and "vetted" are editorial labels based on our own standard for product assessment. They are not guarantees, certifications, or medical claims. Learn more.

Natural Hair Love Prep Spray

Natural Hair Love Prep Spray

Innersense

Welpr Rating
4.9?
Est. Price$28
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on Innersense

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on Credo Beauty

Discount Code
WELPR
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Serum Spray

Serum Spray

Josh Rosebrook

Welpr Rating
4.7?
Est. Price$20
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on Credo Beauty

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on Amazon

Leave in Hair Conditioner Spray

Leave in Hair Conditioner Spray

Yarok

Welpr Rating
4.7?
Est. Price$32
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on Amazon

Hydration Detangler Spray + UV Barrier

Hydration Detangler Spray + UV Barrier

Rahua

Welpr Rating
4.7?
Est. Price$32
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on Amazon

How to Swap to Non-Toxic heat protectants:

Here's how to swap to non-toxic heat protectants:

What to know about heat protectant

Heat protectants are applied directly to your hair and often your scalp before styling, and they stay on without being rinsed off. Because they sit on your body during prolonged heat exposure, the ingredients they contain matter more than you might expect.

  • Many heat protectants contain synthetic fragrances, silicones, and preservatives that can build up on hair and come into contact with your scalp over time.
  • Products you apply frequently and leave on rank higher in Welpr's risk framework, so a daily heat protectant deserves a closer look than something you use once a month.

Review what you already use

Check your current heat protectant using the Welpr Personal Care and Cosmetic Scanner. It takes a picture of your ingredient label and flags ingredients that may not meet Welpr's standards.

  • Look at the ingredient list for "fragrance" or "parfum"—these often indicate undisclosed synthetic fragrance blends.
  • If you use more than one heat styling product (a spray plus a serum, for example), scan the one you use most often first.

Use your current heat protectant more carefully

If you're not ready to replace your heat protectant right away, small changes in how you apply it can reduce unnecessary contact with your skin and scalp.

  • Apply the product to mid-lengths and ends rather than spraying directly at your roots or scalp.
  • Use the minimum amount needed for coverage—a little often goes further than you think, especially with spray formulas.

Choose a cleaner heat protectant

Look for heat protectants with simple, functional formulas. The best options skip synthetic fragrance, harsh preservatives, and unnecessary additives while still protecting your hair from heat damage.

  • Choose fragrance-free options or products scented only with essential oils or plant extracts, and look for certifications like EWG VERIFIED™ or MADE SAFE® as a helpful starting point.
  • Click the button above to shop Welpr Approved heat protectant.
Camille May

Camille May

Cofounder & Product Curator

Camille May is the co-creator of Welpr and a guide for clean living. After selling her last company in the health food space, she went non-toxic while working to heal an autoimmune condition....

Olushola M. Awoyemi

Olushola M. Awoyemi

Medical Reviewer, PhD

Olushola M. Awoyemi (aka Shola) is a board-certified toxicologist and a research scientist with a PhD in Environmental Toxicology. Shola's long-term ambition is to be recognized as a world-renowned expert in toxicology,...