Minimizes heat damage during the styling process
This is a marketing claim; an ingredient list cannot speak to it.
—
Stated by brand
Can’t be confirmed from label.
ORS
Olive Oil Thermalast Heat Protection Serum
Heat protectant / Lotion, heat-protecting
- Heat protectant
- serum
- Also a finisher
- Sulfate-free
- Protein-free
- Cruelty-free · PETA-listed
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: orshaircare.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.
- About 20 minutes, and your answers save as you go.
- Every product matched against your hair across the 20 factors we check.
- A personalized routine built around your schedule, styling habits, and local weather.
- Find products that do the same job at a lower cost.
- Your goals, scalp, damage history, water, budget, and scent preferences all shape your plan.
$49 with 60 days of follow-up questions and plan updates
$99 with 12 months. Pay once; the year renews only if you choose.
Factor
Your profile
Fit
Best for hair types
Straight–Curly
Not in your profile
Moisture level
Low
Not in your profile
Heat protection
Moderate
Not in your profile
Slip / detangling
Some
Not in your profile
Weight on hair
Medium
Not in your profile
Fragrance
Present
Not in your profile
Protein
None
Not in your profile
Silicone / wax buildup
High
Not in your profile
Clarifying wash needed
Moderate
Not in your profile
Parabens / preservatives
None of these listed
Not in your profile
Show all 20 factors we check
The rest of what your plan weighs on this product.
Essential oils
None listed
Not in your profile
Fast-drying alcohol
None
Not in your profile
Vegan / cruelty-free
Cruelty-free · PETA-listed
Not in your profile
Animal-derived ingredients
Not yet verified
Not in your profile
Heavy humectants
Not heavy
Not in your profile
Hard-water defence
None
Not in your profile
UV filter
None listed
Not in your profile
Ingredient list
14 ingredientsA short list
Not in your profile
Price tier
Drugstore
Not in your profile
Where to buy it
Brand websiteOne channel
Not in your profile
The consultation builds your hair profile, checks every factor in this table against it, and tells you where this product fits or what to use instead.
Start your consultation$49 once, with 60 days of follow-up questions and plan updates. Nothing renews, and you never have to buy a product.
Your avoid-list
Lower cost than most heat protectants
$1.33/oz at 6 oz, less than 93% of the 841 heat protectants , which mostly run $2.76–9.80/oz.
Great for
Heat stylingthe brand positions this as a heat protectant
Protein-sensitive hairthat stiffens when protein is added
Very dry hairno fast-drying alcohol in the list
A wide range of haira middle-of-the-range weight
Short ingredient listsfifteen ingredients or fewer
Tight budgetsit sits in the lower price tiers
Maybe skip if
this product has a scent
Curly-method routinesthese silicones need a detergent to remove
Picking it up locallywe’ve only seen it sold in one channel
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.
Heat protection
Claimed, no temperature given
Sold as a heat protectant; no temperature is stated.
Weight on the hair
Medium
Middle of the range: noticeable on fine hair, light on coarse 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)
None found
No humectants, so nothing here pulls water into the hair.
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.
| Ingredient | What it does | Why it matters | Chip |
|---|---|---|---|
| Cyclopentasiloxane | silicone | Spreads heat across the strand | Buildup |
| CyclopentasiloxaneCyclomethicone | silicone | Spreads heat across the strand | Buildup |
| Dimethicone Crosspolymer | film former | Lays down the film that holds a shape | Buildup |
| Dimethicone | silicone | Spreads heat across the strand | Buildup |
| CyclopentasiloxaneCyclomethicone | silicone | Spreads heat across the strand | Buildup |
| Dimethiconol | silicone | Spreads heat across the strand | Buildup |
| Amodimethicone | silicone | Spreads heat across the strand | Buildup |
| Methyl Soyate | light ester | Light slip without much weight | Softens |
| Aminopropyl Phenyl Trimethicone | silicone | A little heat-spreading smoothing | Buildup |
| FragranceParfum/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 (14)
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
Cyclopentasiloxane
General function
A light, fast-evaporating silicone that spreads other ingredients then leaves. It gives serums their weightless glide.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
PubChemMay suitBuild-up-sensitive routinesIt 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 hairA surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.
May suitFine or easily flattened hairA cyclic silicone evaporates after it has spread the formula, so it carries the other ingredients without leaving weight behind.
- silicone
- emollient
-
2
Cyclopentasiloxane
· Cyclomethicone
General function
A light, fast-evaporating silicone that spreads other ingredients then leaves. It gives serums their weightless glide.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
PubChemMay suitBuild-up-sensitive routinesIt 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 hairA surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.
May suitFine or easily flattened hairA cyclic silicone evaporates after it has spread the formula, so it carries the other ingredients without leaving weight behind.
- silicone
- emollient
-
3
Dimethicone Crosspolymer
General function
A synthetic film-forming polymer. Polymers of this kind dry to a continuous film on the hair, which is how a styling product holds a shape.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
May suitClimate-sensitive or frizz-prone hairA 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 hairA crosslinked or hydroxyl-terminated silicone lays a continuous film, which is the most durable surface smoothing this class offers.
May suitMaximum-hold stylingFilm formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.
- film former
- polymer
- silicone
-
4
Dimethicone
General function
The most common conditioning silicone. It coats the strand for shine, slip, and frizz control, and needs a detergent (not just water) to wash out.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
May suitClimate-sensitive or frizz-prone hairA 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 hairLays a smooth film along the cuticle, which lowers combing friction and flattens the surface irregularities that read as frizz.
May not suitBuild-up-sensitive routinesDimethicone does not disperse in water. On a routine that skips detergent it stays on the hair and accumulates wash after wash.
- silicone
- emollient
- conditioning agent
-
5
Cyclopentasiloxane
· Cyclomethicone
General function
A light, fast-evaporating silicone that spreads other ingredients then leaves. It gives serums their weightless glide.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
PubChemMay suitBuild-up-sensitive routinesIt 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 hairA surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.
May suitFine or easily flattened hairA cyclic silicone evaporates after it has spread the formula, so it carries the other ingredients without leaving weight behind.
- silicone
- emollient
-
6
Dimethiconol
General function
A high-shine silicone often paired with dimethicone for a smoother, glossier finish.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
PubChemMay suitClimate-sensitive or frizz-prone hairA 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 hairLays a smooth film along the cuticle, which lowers combing friction and flattens the surface irregularities that read as frizz.
May not suitBuild-up-sensitive routinesDimethicone does not disperse in water. On a routine that skips detergent it stays on the hair and accumulates wash after wash.
- silicone
- emollient
-
7
Amodimethicone
General function
A silicone modified to stick where hair is damaged, so it smooths selectively instead of coating everything. It resists rinsing more than plain dimethicone.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
International Journal of TrichologyMay suitClimate-sensitive or frizz-prone hairA 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 hairAmino-functional silicone carries a positive charge, so it binds where the cuticle is worn rather than coating evenly. Damaged areas get most of it.
May suitMaximum-hold stylingFilm formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.
- silicone
- conditioning agent
- film former
-
8
Methyl Soyate
General function
A soy-derived ester used as a solvent and light emollient.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
- light ester
- emollient
- solvent
-
9
Aminopropyl Phenyl Trimethicone
General function
A silicone. Silicones coat the strand for slip, shine and frizz control; unless the name carries PEG or PPG, removing one takes a detergent rather than water.
Secondary ingredientLower 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 hairA 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 hairLays a smooth film along the cuticle, which lowers combing friction and flattens the surface irregularities that read as frizz.
May not suitBuild-up-sensitive routinesDimethicone does not disperse in water. On a routine that skips detergent it stays on the hair and accumulates wash after wash.
- silicone
- conditioning agent
-
10
Isopropyl Myristate
General function
A very light ester that makes products glide and disappear quickly on the hair.
Secondary ingredientLower in the ordered portion of the list, it is more likely playing a supporting role than defining the formula.
PubChemMay suitFine or easily flattened hairA light emollient: it softens the surface with noticeably less weight than an oil or a butter.
May suitFrizz-prone, damaged, or high-friction hairSpreads thin and lowers friction between strands without the heaviness of a fixed oil.
- light ester
- emollient
-
11
Methyl Olivate
- emollient
- light ester
-
12
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.
Secondary ingredientLower in the ordered portion of the list, it is more likely playing a supporting role than defining the formula.
International Journal of TrichologyMay suitDry, coarse, or high-porosity hairBecause 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 hairA 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 hairThe 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.
- oil
- emollient
- ▾Below about here, the order stops meaning much. These are usually used at 1% or less.
-
13
Fragrance
· Parfum/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 zoneIt 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 routinesDeclared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.
- fragrance
- declared fragrance
-
14
Ci 60725 (Violet 2)
- colourant
- direct dye
- violet dye
What the whole list adds up to
- 9 emollients
- 8 silicones
- 3 conditioning agents
- 3 light esters
- 2 film formers
- 1 polymer
- 1 solvent
- 1 oil
- 1 fragrance
- 1 declared fragrance
- 1 colourant
- 1 direct dye
- 1 violet dye
Ingredient list captured 2026-08-23. Formulas change, so check the package in your hand when an ingredient matters to you.
Price · 6 oz
Commonly seen
$8–10
Sizes
3.96 oz
$10
$2.52/oz
6 ozusual store size
$8–10
$1.33/oz
The 6 oz costs 47% less per ounce than the 3.96 oz.
Show the price ladder
Where we’ve seen it5 listings · 5 stores
6 ozusual store sizeBest per ounce
-
Walmart
$7.976 oz · $1.33/ozAug 30Lowest per ozSale · was $31.88
-
Brand website
$7.996 oz · $1.33/ozAug 23
-
ORS Hair Care
$7.996 oz · $1.33/ozAug 30
-
CVS
$11.496 oz · $1.92/ozAug 30
3.96 oz
-
Hairgrade
$10.003.96 oz · $2.52/ozAug 30Lowest per oz
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
- 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.
- Commonly seen is the middle half of current prices for the 6 oz at recognised stores. We leave out the cheapest and most expensive quarters, so one sale or one overpriced listing can’t move it.
- Each size is guarded on its own, so a multipack or a marketplace listing at one size cannot move another.
- About $33 is what heat protectants typically cost at this size. Too few of the products that do the same job carry a price for us to draw a good-value line.
Formula
6
Formula score
6 of 10
Not the most complete heat protectant formula we have read, but it is under most of the range for heat protectants per ounce.
How the score is counted
- Costs less per ounce than 93% of the 841 heat protectants we’ve priced
- No light base in the formula
- Reviewers mention 2 things they like about how it performs
- Drugstore 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.
LADORClosest function
Wonder Hair Oil
$7.29/oz $5.96/oz more
- Protein-free
- Shine
- Alcohol-free
- Differs
Garnier FructisLowest cost per oz
Sleek & Shine Sleek & Stay Heat-Activated Serum
$5.13/oz $3.80/oz more
- Heat protect
- Protein-free
- Alcohol-free
- Function
- Also
MatrixClose function
Mega Sleek 96H Anti-Frizz Topcoat
$11.24/oz $9.91/oz more
- Heat protect
- Protein-free
- Alcohol-free
- Function
- Also
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
Final decision
Should you buy it?
A solid pick for the hair it suitsBest user
People who blow-dry or flat-iron, for heat protection and a protein-free formula
Biggest tradeoff
Not ideal for anyone sensitive to fragrance, curly-method routines, or anyone who wants to pick it up locally
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.
Claims check
What the brand says, and what the formula shows
Claims are quoted from the brand. We mark a claim supported, partly supported or conflicting only when the ingredient list speaks to it. Everything else stays "stated by the brand". That isn’t a criticism: most claims can’t be checked from a label.
1
SupportedBacked by ingredients
1
Partly supportedSome supporting logic
2
Stated by brandNo clear evidence
0
Potential conflictFormula works against claim
Enhances the thermal straightening process
This is a marketing claim; an ingredient list cannot speak to it.
—
Stated by brand
Can’t be confirmed from label.
Seals in moisture and shine
Humectants and emollients are present, but lower in the list than the claim implies.
- Cyclopentasiloxane
- Dimethicone
- Dimethiconol
Partly supported
Some hydration, at a low level.
Leaves hair silky and smooth
Silicones or film formers smooth the cuticle, which is the usual mechanism.
- Cyclopentasiloxane
- Dimethicone Crosspolymer
- Dimethicone
Supported
Smoother strands, less frizz.
How to read this
We look at the first 10–15 ingredients and what they do in a formula, not at the marketing. If the list doesn't speak to a claim, we don't assume.
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.
Effective heat protection for blow-drying and flat-ironing, achieves salon-smooth press results
Leaves hair smooth, shiny, and holds style longer without heaviness
Shipping/packaging issue — bottle arrived leaking, product wasted
More from ORS
- Curlshow Second Act Curl Conditioner
- HAIRepair Banana & Bamboo Nourishing Conditioner
- Olive Oil Deep Hydrating Creamy Aloe Conditioner for Rejuvenating Moisture
- Olive Oil Goodbye Dry Thirst Quencher Conditioner
- Olive Oil Max Moisture Deep Treatment Conditioner
- Olive Oil Professional Replenishing Conditioner
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.
- 3 sources consulted for this product (3 manufacturer or regulatory, 0 retailer, 0 editorial), last checked 2026-08-25.
- Ingredient references are linked for 7 of 11 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 2026-08-25.
