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Sun Bum

Heat Protector

Heat protectant / Spray, lightweight

  • Heat protectant
  • Sulfate-free
  • Protein-free
  • Moisture-rich
  • Cruelty-free · PETA-listed
Size6 oz
Price$16.99 Good valueseen at one store · 6 oz
Price / oz$2.83/ozat 6 oz

Add it to your products. We’ll tell you if it’s ever recalled.

Scent:

The ingredient list declares fragrance. What it smells of is not stated, and we do not guess.

Manufacturer page: sunbum.com

Personal fit

Is this right for you?

Complete the consultation to see how well this product fits your hair and your goals. With 6,000+ products in our library, we can match you to the right ones.

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$49 with 60 days of follow-up questions and plan updates

$99 with 12 months. Pay once; the year renews only if you choose.

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Priced with its peers

$2.83/oz at 6 oz, less than 71% of the 295 heat protectants , which mostly run $2.41–6.78/oz.

Price and stores

Great for

Protein-sensitive hairthat stiffens when protein is added
Dry, thirsty hairhumectants and emollients both sit up front
Fine hairthat flattens under most products
Very dry hairno fast-drying alcohol in the list
Sun and colour fadea UV filter is in the list

Maybe skip if

this product has a scent
Curly-method routinesthese silicones need a detergent to remove
Dry or very humid airwhere heavy humectants work against you
Picking it up locallywe’ve only seen it sold in one channel

How much heat protection you need depends on how often and how hot you style. Your consultation takes that into account.

What the formula actually does

Read from the label, not the marketing

Each row says where it comes from: F means we derived it from this product’s own ingredient list, S means it is a claim the brand makes that the formula neither confirms nor contradicts.

Weight on the hair Light

Water-first and light: unlikely to flatten fine hair.

Slip and detangling Some

Some slip, mostly from esters or silicones rather than conditioners.

Needs detergent to remove Yes

Water-insoluble silicones or waxes: a detergent wash is what removes them.

Water-binding (humectants) High

Humectants near the top: binding water is one of its main jobs.

Fast-drying alcohol None

No fast-drying alcohol in the list.

Fragrance Present

Fragrance is listed; it sits below the working ingredients.

from the formula stated by the brand reported by reviewers Scale: 1 dot low · 5 dots high, within this product type.

Ingredients that matter

The ingredients that change a decision

The workhorse ingredients, plus anything lower down that changes a decision. The chips name what an ingredient does. They are not safety scores, and no ingredient here is rated good or bad on its own.

IngredientWhat it doesWhy it mattersChip
Water solvent The base everything else is dissolved in Neutral
Cyclopentasiloxane silicone Spreads heat across the strand Buildup
Isohexadecane solvent The base everything else is dissolved in Softens
Hexylene Glycol solvent The base everything else is dissolved in Moisturizes
Morinda Citrifolia Fruit Extract botanical extract A plant extract, there as much for marketing as for function Neutral
Macrocystis Pyrifera (Kelp) Extract botanical extract A plant extract, there as much for marketing as for function Neutral
Cocos Nucifera (Coconut) Oil oil Coats and softens the strand Softens
Musa Sapientum (Banana) Pulp Extract botanical extract A plant extract, there as much for marketing as for function Neutral
Polysilicone-15 silicone A little heat-spreading smoothing Buildup
Fragrance fragrance The scent Fragrance
What the list leaves out, and what it carriesThe list carries no sulfates or drying alcohols. No protein: a moisture formula, not a repair one. Fragrance is on the label. Water-insoluble silicones that need a detergent wash to remove.
Full ingredient list (24)

In the US, ingredients above 1% are listed from most to least. Below 1% they can appear in any order. Each note keeps three things apart: what the ingredient generally does, its role in this type of product, and what its position can tell you.

  • 1 Water
    General function

    The base of almost every rinse-off and cream hair product. It carries everything else and is normally the first ingredient on the label.

    Leading ingredient

    Listed in the first three ingredients, it is likely a structural part of this formula.

    • solvent
  • 2 Cyclopentasiloxane
    General function

    A light, fast-evaporating silicone that spreads other ingredients then leaves. It gives serums their weightless glide.

    Leading ingredient

    Listed in the first three ingredients, it is likely a structural part of this formula.

    May suitBuild-up-sensitive routines

    It leaves the hair by evaporating rather than by being washed off, so it is not part of what accumulates.

    May suitClimate-sensitive or frizz-prone hair

    A surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.

    May suitFine or easily flattened hair

    A cyclic silicone evaporates after it has spread the formula, so it carries the other ingredients without leaving weight behind.

    PubChem
    • silicone
    • emollient
  • 3 Isohexadecane
    General function

    A light, quickly evaporating carrier that spreads silicones and oils thinly, then leaves.

    Leading ingredient

    Listed in the first three ingredients, it is likely a structural part of this formula.

    May suitFrizz-prone, damaged, or high-friction hair

    Emollients fill and smooth the surface of the strand, which lowers the friction that lifts the cuticle and reads as roughness.

    • solvent
    • emollient
  • 4 Hexylene Glycol
    General function

    A solvent that keeps other ingredients dissolved and helps preservatives work.

    Supporting ingredient

    Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

    May suitFine or easily flattened hair

    Light and water-binding rather than oily, so it adds less weight than oils or butters do.

    May suitVery dry or highly damaged hair

    A small water-binding solvent. It holds moisture and helps the rest of the formula spread evenly over the strand.

    DependsClimate-sensitive or frizz-prone hair

    A humectant follows the air: it holds water in humid conditions and can give it up in very dry ones. Climate decides what it does more than the label does.

    PubChem
    • solvent
    • humectant
  • 5 Morinda Citrifolia Fruit Extract
    General function

    An extract from the fruit of Morinda Citrifolia. Plant extracts are used across a wide range of levels, and label order is the best guide to how much is here.

    Supporting ingredient

    Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

    • botanical extract
  • 6 Macrocystis Pyrifera (Kelp) Extract
    General function

    A seaweed extract used at low levels for moisture and mineral claims.

    Supporting ingredient

    Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

    • botanical extract
  • 7 Cocos Nucifera (Coconut) Oil
    General function

    One of the few oils small enough to move into the strand, which is why it is used for pre-wash treatments. It can feel heavy or stiff on protein-sensitive hair.

    Supporting ingredient

    Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

    May suitDry, coarse, or high-porosity hair

    Because it penetrates rather than sits on top, it works on hair that loses water through a worn cuticle instead of only slowing evaporation from the surface the way a non-penetrating oil does.

    May suitFrizz-prone, damaged, or high-friction hair

    A thin oil layer lowers friction between strands and flattens the raised cuticle that scatters light and catches on its neighbours.

    May suitVery dry or highly damaged hair

    The exception to the class read: lauric acid is small and linear enough to enter the shaft rather than only coat it, and in comparison testing coconut oil was the one that reduced protein loss from washing on both undamaged and damaged hair.

    International Journal of Trichology
    • oil
    • emollient
  • 8 Musa Sapientum (Banana) Pulp Extract
    General function

    An extract from the pulp of Banana (Musa Sapientum). Plant extracts are used across a wide range of levels, and label order is the best guide to how much is here.

    Supporting ingredient

    Listed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.

    • botanical extract
  • 9 Musa Sapientum (Banana) Peel Extract
    • botanical extract
  • 10 Musa Sapientum (Banana) Leaf Extract
    • botanical extract
  • 11 Musa Sapientum (Banana) Flower Extract
    • botanical extract
  • 12 Helianthus Annuus (Sunflower) Seed Oil
    General function

    A light, widely used oil that softens without much weight.

    Secondary ingredient

    Lower in the ordered portion of the list, it is more likely playing a supporting role than defining the formula.

    May suitDry, coarse, or high-porosity hair

    Coats the surface and slows water leaving the strand, which is usually what coarse hair that dries out fast is missing.

    May suitFrizz-prone, damaged, or high-friction hair

    A thin oil layer lowers friction between strands and flattens the raised cuticle that scatters light and catches on its neighbours.

    DependsVery dry or highly damaged hair

    It works on the surface. In the comparison that established coconut oil's penetration, sunflower oil did not reduce protein loss from washing — its fatty acids are bulkier and less linear. It softens and smooths; it does not reinforce the fibre.

    International Journal of Trichology
    • oil
    • emollient
  • 13 Butyrospermum Parkii (Shea) Butter
    General function

    A rich, solid plant butter used for heavy conditioning on coarse or dry hair. High in the list it makes a product decidedly heavy.

    Secondary ingredient

    Lower in the ordered portion of the list, it is more likely playing a supporting role than defining the formula.

    May suitDry, coarse, or high-porosity hair

    Coarse, porous hair loses water quickly and can carry the weight; a butter slows that loss more than a thin oil does.

    May suitFrizz-prone, damaged, or high-friction hair

    Emollients fill and smooth the surface of the strand, which lowers the friction that lifts the cuticle and reads as roughness.

    May suitVery dry or highly damaged hair

    A solid fat melts onto the strand at body temperature and stays there, which is the heaviest surface moisture-holding a formula can offer.

    • butter
    • emollient
    • sealant
  • 14 Olea Europaea (Olive) Fruit Oil
    General function

    A heavy, coating oil traditionally used for deep conditioning.

    Secondary ingredient

    Lower in the ordered portion of the list, it is more likely playing a supporting role than defining the formula.

    May suitDry, coarse, or high-porosity hair

    Coats the surface and slows water leaving the strand, which is usually what coarse hair that dries out fast is missing.

    May suitFrizz-prone, damaged, or high-friction hair

    A thin oil layer lowers friction between strands and flattens the raised cuticle that scatters light and catches on its neighbours.

    • oil
    • emollient
  • 15 Persea Gratissima (Avocado) Oil
    General function

    A rich oil used in masks and heavier creams for softness on coarse or dry hair.

    Secondary ingredient

    Lower in the ordered portion of the list, it is more likely playing a supporting role than defining the formula.

    May suitDry, coarse, or high-porosity hair

    Coats the surface and slows water leaving the strand, which is usually what coarse hair that dries out fast is missing.

    May suitFrizz-prone, damaged, or high-friction hair

    A thin oil layer lowers friction between strands and flattens the raised cuticle that scatters light and catches on its neighbours.

    • oil
    • emollient
  • 16 Poloxamer 184
  • 17 Polysilicone-15
    General function

    A silicone that also absorbs UV, used in leave-on products to slow colour fade.

    Secondary ingredient

    Lower in the ordered portion of the list, it is more likely playing a supporting role than defining the formula.

    May suitClimate-sensitive or frizz-prone hair

    A surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.

    May suitFrizz-prone, damaged, or high-friction hair

    Lays a smooth film along the cuticle, which lowers combing friction and flattens the surface irregularities that read as frizz.

    May suitGray, silver, or brass-prone hair

    Sunlight oxidises hair pigment, and on gray, silver or lightened hair that shows up as yellowing. A UV filter on the label absorbs some of the light that drives it.

    • silicone
    • UV filter
  • ▾Below about here, the order stops meaning much. These are usually used at 1% or less.
  • 18 Fragrance
    General function

    An undisclosed blend of scent ingredients. Regulations let it stay unlisted, so a fragrance-free product is the only way to be certain what is not in it.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May not suitFragrance-sensitive routines

    Declared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.

    • fragrance
    • declared fragrance
  • 19 Phenoxyethanol
    • preservative
  • 20 Gluconolactone
    General function

    A gentle acid that holds water and helps loosen surface build-up. It also binds a little hard-water mineral.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May suitBuild-up-sensitive routines

    Binds the calcium and magnesium in hard water, which is what stops mineral deposits accumulating on the strand wash after wash.

    May suitDry, coarse, or high-porosity hair

    High-porosity hair loses water fast; a humectant holds some of it in place for longer than the wash itself would.

    May suitGray, silver, or brass-prone hair

    Copper and iron carried in tap water deposit on the strand and read as a dull, warm cast on gray or light hair. A chelator holds those metals in solution so the wash carries them off.

    PubChem
    • humectant
    • exfoliant
    • hard-water chelator
  • 21 Sodium Benzoate
    • preservative
  • 22 Citric Acid
    General function

    Used to bring the product to a slightly acidic pH, which helps the cuticle lie flat. It is almost always near the end of the list.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May suitBuild-up-sensitive routines

    Holds hard-water minerals in solution so they rinse away instead of depositing on the hair.

    May suitFrizz-prone, damaged, or high-friction hair

    The acid side of pH adjustment, and the reason it matters is measured: alkaline formulas raise the fibre's surface negative charge, increase friction between strands and lift the scales, while lower-pH ones do the reverse.

    May suitGray, silver, or brass-prone hair

    Where a warm cast comes from water minerals rather than from the hair itself, holding those metals in solution is what removes it.

    International Journal of Trichology
    • pH adjuster
    • hard-water chelator
  • 23 Yellow 5 · Yellow 5 (CI 19140)
    General function

    A certified colour added to tint the product itself. It does not colour hair.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May suitGray, silver, or brass-prone hair

    A violet or blue colorant sits opposite yellow on the colour wheel, so a trace of it deposited on the surface makes a warm cast read cooler. It washes out over the following few washes.

    • colourant
  • 24 Blue 1 (CI 42090)
    General function

    A certified colour used to tint the product itself, not the hair.

    Estimated lower-concentration zone

    It appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.

    May suitGray, silver, or brass-prone hair

    A violet or blue colorant sits opposite yellow on the colour wheel, so a trace of it deposited on the surface makes a warm cast read cooler. It washes out over the following few washes.

    • colourant
    • direct dye
    • blue dye

What the whole list adds up to

  • 7 emollients
  • 6 botanical extracts
  • 4 oils
  • 3 solvents
  • 2 silicones
  • 2 humectants
  • 2 preservatives
  • 2 hard-water chelators
  • 2 colourants
  • 1 butter
  • 1 sealant
  • 1 UV filter
  • 1 fragrance
  • 1 declared fragrance

Ingredient list captured 2026-10-08. Formulas change, so check the package in your hand when an ingredient matters to you.

Price · 6 oz

Seen at $16.99 1 store · checked Oct 12
Good value under $36 Under $5.94/oz it costs less than three-quarters of the 5 products we score as doing the same job

Usually a good value. Most stores sell it under the $36 line, and products that do this job typically go for about $84 at this size.

Show the price ladder
Where we’ve seen it2 listings · 2 stores

Sorted by price per ounce. Dated observations from our research, not live prices. Direct store pages, no affiliate links. We don’t sell this product.

How we work this out
  1. 6 oz is the size stores list most often; every comparison on this page is made at it. Other sizes are shown in the Sizes row and the store list.
  2. Seen at $16.99 is the price we have observed for the 6 oz. We need three stores before we call a price commonly seen.
  3. Good value under $36 comes from the 5 products we score as doing the same job as this one. A quarter of them cost less than $5.94/oz; at 6 oz that is $36. Under that line you are paying less than most of them.
  4. About $84 is what those same products typically cost at this size: the midpoint of their prices per ounce, scaled to 6 oz.

Formula

Formula score
7 of 10

Nothing separates this from the middle of the range for heat protectants, on formula or on cost per ounce.

How the score is counted
  • Costs less per ounce than 71% of the 295 heat protectants we’ve priced
  • No stated heat claim in the formula
  • Reviewers mention 2 recurring complaints
  • Masstige tier, sold at Brand website
  • A film-forming heat spreaderSilicones or polymers that spread heat along the strand.3 pts
  • A stated heat claimThe brand names the protection it claims.2 pts
  • A light baseWater or a volatile carrier first, so it does not weigh hair down.2 pts
  • A humectantBinds water into the hair.1 pt
  • Slip for detanglingReduces the force it takes to comb wet hair.1 pt
  • Fragrance kept out of the top eightScent as a finishing touch, not a major share.1 pt

The formula score measures completeness for the job: a weighted share of the systems this product type is usually built around that we find in this list. It does not rate how well the product works or its quality, and it never compares across product types.

Does the same job

Formulas that do the same things (cleanse, condition, coat or hold) for less per ounce. Scent, texture and where you buy them can still differ.

OlaplexClosest function No.7 Shine Serum Oil Mist $14.02/oz $11.19/oz more
  • Heat protect
  • Protein-free
  • Lightweight
Function
  • Oils and butters
  • UV filter
Also
  • Citrus scent
  • Prestige tier
  • 2.7 oz bottle
Compare
NexxusClose function Humectress 20 in 1 Leave-In Conditioner Perfector Spray $7.88/oz $5.05/oz more
  • Heat protect
  • Protein-free
  • Alcohol-free
Function
  • Slip and detangling
  • Weight on the hair
  • UV filter
Also
  • 9 oz bottle
Compare
CHILowest cost per oz Vibes "Know It All" Multitasking Hair Protector $5.94/oz $3.11/oz more
  • Protein-free
  • Lightweight
  • Alcohol-free
· Close function
Function
  • Water-binding (humectants)
  • Oils and butters
Also
  • Vegan
  • Drugstore tier
  • 2 oz bottle
Compare

See more alternatives in the product library

These products do a similar job. We haven’t matched them to you. Find the one that fits your hair, routine and budget

Built for straight to curly hair

Final decision

Should you buy it?

Good for the right person
Best user

Hair that stiffens on protein, for a protein-free formula and moisture that stays in

Biggest tradeoff

Not ideal for anyone sensitive to fragrance, curly-method routines, or very dry or very humid climates

Best alternative if not

Nothing in our library matches it closely at a lower price.

We do not sell products or take placement fees. This page states what the formula and the prices show; the consultation is what matches it to a person.

Reviewers

What people report

Themes that come up again and again in sourced reviews, written by our researchers in their own words. We don’t store or scrape star ratings.

Blow-dry and hot-tool users often describe hair as softer, smoother and shinier afterwards.

Ulta reviewers who blow-dry or straighten most days; several name curly, wavy, thick or highlighted hair as their own.

Greasy or oily hair is the most frequent complaint, reported even after a light application.

Ulta reviewers, including many lowest-rated pulls; those with fine hair describe it most sharply.

A smaller group says it does not protect hair and leaves it dry or straw-like.

Ulta reviewers who bought it expecting heat protection and felt the hair was worse afterwards.

Drying time is reported both ways: a few reviewers say it shortened blow-dry time, while others saw no gain.

Ulta reviewers who used it before blow-drying; not every reviewer who blow-dries noticed a difference.

Scent gets many good mentions, while some find the coconut note too strong and others find it faint.

Ulta reviewers across the rating range; the scent comments run both ways and are not tied to one hair type.

More from Sun Bum

How this page was made

  • Everything above comes from our researched product record: identity, the ingredient list as printed, the brand's own claims, dated prices and review themes our researchers wrote in their own words. No part of this page is written by hand for one product.
  • The value band is a fixed label over two stored numbers: this product’s cost per ounce as a percentile of every product of this type we have priced, each at the size it is most often sold in, and how many products we score as doing the same job cost at least a quarter less per ounce.
  • Both scores out of ten are defined on this page. The formula score is completeness for the job, computed from a fixed per-format checklist shown beneath the gauge; the price score is cost per ounce against every product of this type we have priced.
  • The "Is this right for you?" panel reads only your own consultation answers, and it applies exactly the filters our recommendation engine applies. It is computed when you load the page and is never stored on it.
  • 5 sources consulted for this product (2 manufacturer or regulatory, 1 retailer, 2 editorial), last checked 2026-10-31.
  • Ingredient references are linked for 6 of 14 product-aware annotations on this page. Fit notes are general formulation guidance. They aren’t a verdict on the finished product or on you.
  • We haven’t tested this product in a lab, and we don’t physically test your hair. Formula readings come from the ingredient list. Claims about how it behaves are labelled as the brand's.
  • Ingredient order tells you relative amount only above roughly 1%. Prices are what we saw on the dates shown and can change.
  • Ingredient names link to our ingredient library, where each entry shows what it does, which product types use it, and where it usually sits on a label across everything we have researched.
  • This is cosmetic information, not medical advice, and nothing here diagnoses or treats a health condition.
  • Formula readings: derivation v23. Record last updated 2026-10-31.

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