Choose for your routine

Heat Protectants for Curly Hair

TheWashDay editorial · Updated · From the makers’ own pages · How we compare

If you diffuse or blow-dry, a heat protectant goes on first, and the question that sorts these seven is when. Five go on damp hair on wash day, before you diffuse or blow-dry; Curlsmith’s Curlshield Cream goes on dry hair; TRESemmé’s spray does either. Six of the seven name a limit, 446°F or 450°F; Mielle names none.

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Pick by when it goes on

Between your leave-in and styler

Curlsmith Miracle Shield

Mini 2 oz / Full 8 oz

Sprayed on wet or damp hair after your leave-in, before your styler, then air-dry or diffuse; up to 450°F.

Why this one

Without fragrance

Bouclème Curl Defence Spray

200 mL

No fragrance named on its list; sprayed through damp hair before or after stylers, up to 446°F.

Why this one

From the drugstore

TRESemmé Protecting Heat Styling Spray

8 oz

On damp hair before heat, or on dry hair before an iron; up to 450°F.

Why this one

On dry hair

Curlsmith Curlshield Cream

Full 4.4 oz

One pump on dry hair before a hot tool, or left in on its own; up to 450°F.

Why this one
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Compare them side by side

Prices are from each maker’s own store, checked . Rows showing sizes only are from makers whose own store gave us no price.

Maker directions, sizes and label details for each product
Product How to use it Its job Sizes and maker’s price On the label Where to buy
Heat protectant Curlsmith Miracle Shield Compare with Bouclème Curl Defence Spray On wash day, spray onto wet or damp hair after your leave-in conditioner. Goes on before heat: a diffuser, a blow-dryer or a curling iron
  • Mini 2 oz: $12.50 ($6.25/oz)
  • Full 8 oz: $28.00 ($3.50/oz)
Up to 450°F, says the maker · On wet or damp hair · Fragrance listed · No protein named · No silicone named View at Curlsmith
Heat protectant Bouclème Curl Defence Spray Compare with Curlsmith Miracle Shield Spray evenly through damp, clean hair from root to tip. Goes on before heat: a diffuser, a blow-dryer or a curling iron
  • 200 mL: $36.00 ($5.32/fl oz)
Up to 446°F, says the maker · On damp hair · No fragrance named · No protein named · No silicone named View at Bouclème
Heat protectant OLAPLEX Nº.9 Bond Protector Nourishing Hair Serum Compare with Curlsmith Miracle Shield Apply a small amount to clean, damp hair, working from ends up to roots. Goes on before heat: a diffuser, a blow-dryer or a curling iron
  • $32.00, size not named
Up to 450°F, says the maker · On damp hair · Fragrance listed · No protein named · No silicone named View at OLAPLEX
Heat protectant Briogeo Farewell Frizz Blow Dry Perfection & Heat Protectant Crème Compare with Curlsmith Miracle Shield Apply a dime- to quarter-sized amount to damp hair, focusing on mid-lengths to ends. Goes on before heat: a diffuser, a blow-dryer or a curling iron Travel 2 oz / Full 4 oz Up to 450°F, says the maker · On damp hair · Fragrance listed · Protein: Hydrolyzed Corn Protein*, Hydrolyzed Wheat Protein*, Hydrolyzed Soy Protein* · No silicone named View at Briogeo
Heat protectant Mielle Mongongo Oil Thermal & Heat Protectant Spray Compare with Curlsmith Miracle Shield After shampooing, apply to clean, wet hair. Goes on before heat: a diffuser, a blow-dryer or a curling iron
  • 4 fl oz: $5.00 ($1.25/fl oz), marked down from $9.99
No temperature limit given · On wet hair · Fragrance listed · Protein: Hydrolyzed Wheat Protein · Silicone: Amodimethicone, Peg-12 Dimethicone, Cyclopentasiloxane, Dimethiconol View at Mielle
Heat protectant TRESemmé Protecting Heat Styling Spray Compare with Curlsmith Miracle Shield Spray onto damp hair before heat styling. Goes on before heat: a diffuser, a blow-dryer or a curling iron 8 oz Up to 450°F, says the maker · On damp or dry hair · Fragrance listed · Protein: Hydrolyzed Silk · Silicone: Amodimethicone, PEG-12 Dimethicone View at TRESemmé
Heat protectant Curlsmith Curlshield Cream Compare with Curlsmith Miracle Shield Start with dry hair. Goes on before heat: a diffuser, a blow-dryer or a curling iron
  • Full 4.4 oz: $29.00 ($6.59/oz)
Up to 450°F, says the maker · On dry hair · Fragrance listed · Protein: nicotiana benthamiana hexapeptide-40 sh-polypeptide-47 · No silicone named View at Curlsmith

Heat protectants whose makers publish a full ingredient list and directions, from the makers’ own US pages. We haven’t used or tested them, and commissions never change the list or its order.

Damp hair before you diffuse, or dry hair before a hot tool

On wash day the protectant goes on damp hair with your other products, and its maker decides the order: Curlsmith puts Miracle Shield after the leave-in and before the styler; Bouclème says before or after stylers; OLAPLEX says first.

On a dry-hair day, before a curling iron or a refresh with heat, you need one its maker allows on dry hair: Curlshield Cream, or TRESemmé’s spray.

For wash day: five that go on damp hair

Curlsmith Miracle Shield (2 or 8 oz) and Bouclème Curl Defence Spray (200 mL) both name diffusing in their directions, and so does OLAPLEX Nº.9, a serum OLAPLEX calls water-activated, for damp or wet hair only, with no hold.

Briogeo’s Farewell Frizz crème is a dime- to quarter-sized amount on damp hair, mid-lengths to ends, combed through before you blow-dry. Mielle’s Mongongo Oil spray is combed through clean, wet hair after shampooing; Mielle gives no temperature for it.

For dry hair: Curlshield Cream and TRESemmé

Curlsmith’s Curlshield Cream starts on dry hair: one pump between your palms, smoothed on section by section, then a heated tool or nothing more; Curlsmith says it also gives definition when left in without heat.

TRESemmé’s Protecting Heat Styling Spray goes on damp hair before heat styling or on dry hair before a curling or flat iron. Its own page shows no price; it is sold through other stores.

What the number on the label means

The 450°F (or Bouclème’s 446°F) is the highest heat each maker says its product protects against. It is the maker’s claim, not a test we ran. For the heat of your own dryer, follow its manual.

Two oils also name heat protection: OLAPLEX Nº.7 up to 450°F, and Bouclème Revive 5 for a dryer or diffuser on low to medium heat, with no number.

When a product isn’t a heat protectant

A leave-in, a styler or a refresher isn’t a heat protectant unless its maker says so. PATTERN, for one, says its Hydrating Mist is not made as one.

What this comparison does and doesn’t claim

We haven’t used these protectants; we compare what their makers publish. This isn’t a ranking. Briogeo’s crème showed as out of stock on its own store the day we read it.

Questions before your next wash

Do I need a heat protectant if I diffuse?

If you diffuse with heat, a product its maker labels as a heat protectant is how you have one on. Curlsmith, Bouclème and OLAPLEX name diffusing in their directions. Air-drying uses no heat.

Can a heat protectant go on before my gel?

Yes, if its maker puts it there: Curlsmith Miracle Shield goes after the leave-in and before the styler, and Bouclème’s spray goes before or after stylers.

Is a leave-in conditioner a heat protectant?

Only if its maker says it protects from heat. Check the label of the one you use.

Updated · The sources for this guide are on our Sources page. Report a changed detail.

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