44 Iron Guard Thermal Protecting Shampoo

CHI Haircare

44 Iron Guard Thermal Protecting Shampoo

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About this product

The CHI Haircare 44 Iron Guard Thermal Protecting Shampoo is a misc. Our analysis of its 44 ingredients (30 low-risk) rates it Excellent (86/100). Heads up: it contains fragrance, which can irritate sensitive or reactive skin.

Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Misc
Ingredients
44
Low-risk
30
Fragrance
Contains fragrance
Origin
United States
Data updated
Jun 2026

The evidence

Quick Product Notes

Paraben-Free Sulfate-Free Alcohol-Free Silicone-Free EU Allergen-Free Fungal Acne (Malassezia) Safe

Notable Effects & Ingredients

No Notable Effects & Ingredients

Ingredients Related to Skin Types

Good   Bad — tap a skin type to see which ingredients · estimated from ingredient functions
Dry Skin 6/11
Good for dry skin
Glycol Distearate Glycerin Propylene Glycol Hydrolyzed Silk Hydrolyzed Keratin PEG-6 Caprylic/Capric Glycerides
Caution for dry skin
C11-15 Pareth-7 C12-16 Pareth-9 Glycerin Trideceth-12 Sodium C14-16 Olefin Sulfonate Acrylates Copolymer Alumina Ceteareth-7 Steareth-4 PEG-6 Caprylic/Capric Glycerides Silica
Oily/Acne-Prone Skin No data
Sensitive Skin 2/12
Good for sensitive skin
Glycerin Tocopheryl Acetate
Caution for sensitive skin
Glycerin Propylene Glycol Citric Acid Phenoxyethanol Linalool Citronellol Hexyl Cinnamal Limonene Benzyl Benzoate Methylisothiazolinone Benzyl Salicylate Coumarin

Ingredients list

44 total
Lower hazard (1) Higher hazard (7)
All44 Skin Conditioning20 Fragrance12 Hair Conditioning11 Antistatic Agent8 Emulsifying8 Masking7 Viscosity Controlling7 Surfactant7
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
4
B
Cocamidopropyl Betaine
(Antistatic Agent, Hair Conditioning, Skin Conditioning, Sufactant, Foam Boosting, Viscosity Increasing Agent, Viscosity Controlling)
2
B
Sodium C14-16 Olefin Sulfonate
(Cleansing, Foaming, Surfactant)
Sulfate
Sulfate
1
Cocamidopropyl Hydroxysultaine
(Antistatic Agent, Hair Conditioning, Skin Conditioning, Sufactant, Foam Boosting, Viscosity Increasing Agent, Viscosity Controlling)
2
A
Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent)
Good for Dry Skin
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
2
B
Acrylates Copolymer
(Adhesive, Artificial Nail Builder, Binding Agent, Film Forming, Hair Fixing, Suspending Agent Nonsurfactant, Antistatic Agent, Binding)
PARFUM
(Fragrance, Perfuming)
1
A
Hydrolyzed Silk
(Hair Conditioning, Skin Conditioning, Antistatic Agent, Humectant)
SIMMONDSIA CHINENSIS SEED OIL
(Hair Conditioning, Skin Conditioning, Skin Conditioning Emollient)
3
Tocopheryl Acetate
(Antioxidant, Skin Conditioning)
Bad for Oily Skin
Bad for Oily Skin
Retinyl Palmitate
(Skin Conditioning, Skin Conditioning Miscellaneous)
Olea Europaea Fruit Oil
(Fragrance, Perfuming, Skin Conditioning)
2
A
Hydrolyzed Keratin
(Hair Conditioning, Nail Conditioning Agent, Skin Conditioning, Antistatic Agent, Film Forming, Humectant)
1
Hydrolyzed Wheat Protein PG-Propyl Silanetriol
(Hair Conditioning, Skin Conditioning)
1
A
Polyquaternium-10
(Antistatic Agent, Film Forming, Hair Fixing)
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)
1
A
Glycol Distearate
(Opacifying, Viscosity Increasing Agent, Emollient, Emulsifying, Skin Conditioning, Viscosity Controlling)
Fungal Acne
Fungal Acne Trigger
3
B
Steareth-4
(Emulsifying, Surfactant)
2
B
Disodium Laureth Sulfosuccinate
(Sufactant, Foam Boosting, Hydrotrope, Foaming)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
7
B
Methylisothiazolinone
(Preservative)
3
B
Propylene Glycol
(Fragrance, Humectant, Skin Conditioningagent Miscellaneous, Solvent, Viscosity Decreasing Agent, Skin Conditioning, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
A
Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
1
Trimethylsiloxyamodimethicone
(Hair Conditioning)
1
B
C11-15 Pareth-7
(Emulsifying, Surfactant)
1
B
C12-16 Pareth-9
(Emulsifying, Surfactant)
1
Trideceth-12
(Emulsifying, Surfactant)
1
Bis-Cetearyl Amodimethicone
(Hair Conditioning)
3
B
Ceteareth-7
(Emulsifying, Surfactant)
3
A
PEG-8 Dimethicone
(Hair Conditioning, Skin Conditioning)
1
Linoleamidopropyl PG-Dimonium Chloride Phosphate
(Antistatic Agent)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
3
A
PEG-150 Pentaerythrityl Tetrastearate
(Viscosity Increasing Agent, Emulsifying)
3
B
PEG-6 Caprylic/Capric Glycerides
(Skin Conditioning, Emollient, Emulsifying, Surfactant)
1
2
A
Silica
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Viscosity Controlling)
2
A
Alumina
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Viscosity Controlling)
1
3
Titanium/Titanium Dioxide
(Cosmetic Colorant, Opacifying)
6
A
Benzyl Benzoate
(Fragrance, Solvent, Antimicrobial, Masking)
Allergens
Allergens
7
Benzyl Salicylate
(Fragrance, Uv Absorber, Masking)
Allergens
Allergens
5
Citronellol
(Fragrance, Masking)
Allergens
Allergens
7
Coumarin
(Fragrance, Masking)
Allergens
Allergens
5
Hexyl Cinnamal
(Fragrance, Masking)
Allergens
Allergens
6
Limonene
(Deodorant, Perfuming, Solvent)
Allergens
Allergens
5
Linalool
(Fragrance, Deodorant, Masking)
Allergens
Allergens

My Ingredient Notes

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Key ingredients

Exfoliators
Removes dead skin cells to smoothe texture.
Retinoid
Visibly reduces the signs of aging.
Vitamin E
Protects skin and soothes irritation.
Antioxidants
Shields skin from free radical damage.

Benefits

HydratingBoosts hydration and relieves dry, tight skin.
Scar HealingImproves the look of marks and scars.
Barrier RepairStrengthen and restore your skin's natural barrier.
BrighteningRestores radiance to dull, tired skin.
Reduces IrritationEases discomfort and supports skin resilience.
Good For Oily SkinBalances oil and helps reduce shine.
Reduces Large PoresMinimizes the look of enlarged pores.
Redness ReducingSoothes visible redness and calms irritation.

Concerns

Contains paraben
Contains sulfate
Contains eu allergen
Not fungal acne (malassezia) safe
Methylisothiazolinone — higher EWG
Benzyl Salicylate — higher EWG
Coumarin — higher EWG
May not suit dry skin

EWG flags hazard, not real-world risk — ratings don't account for how much of an ingredient a product contains. Treat these as things to research, not verdicts. How we score →

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Cocamidopropyl Betaine
Antistatic agent, Hair conditioning
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR B Antistatic agentHair conditioningSkin conditioningSufactantFoam boostingViscosity increasing agentViscosity controlling
Cocamidopropyl Hydroxysultaine
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Antistatic agentHair conditioningSkin conditioningSufactantFoam boostingViscosity increasing agentViscosity controlling
Acrylates Copolymer
Adhesive, Artificial nail builder
Low-hazard ingredient.Read moreShow less
EWG 2 CIR B AdhesiveArtificial nail builderBinding agentFilm formingHair fixingSuspending agent -nonsurfactantAntistatic agentBinding
PARFUM
Fragrance, Perfuming
Limited public safety data.Read moreShow less
EWG N/A FragrancePerfuming
Hydrolyzed Silk
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningAntistatic agentHumectant
SIMMONDSIA CHINENSIS SEED OIL
Hair conditioning, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Hair conditioningSkin conditioningSkin conditioning emollient
Retinyl Palmitate
Skin conditioning, Skin conditioning miscellaneous
Limited public safety data.Read moreShow less
EWG N/A Skin conditioningSkin conditioning miscellaneous
Olea Europaea Fruit Oil
Fragrance, Perfuming
Limited public safety data.Read moreShow less
EWG N/A FragrancePerfumingSkin conditioning
Hydrolyzed Keratin
Hair conditioning, Nail conditioning agent
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A Hair conditioningNail conditioning agentSkin conditioningAntistatic agentFilm formingHumectant
Hydrolyzed Wheat Protein PG-Propyl Silanetriol
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioningSkin conditioning
Polyquaternium-10
Antistatic agent, Film forming
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentFilm formingHair fixing
Disodium EDTA
Chelating agent, Viscosity controlling
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Chelating agentViscosity controlling
Steareth-4
Emulsifying, Surfactant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B EmulsifyingSurfactant
Disodium Laureth Sulfosuccinate
Sufactant, Foam boosting
Low-hazard ingredient.Read moreShow less
EWG 2 CIR B SufactantFoam boostingHydrotropeFoaming
+ 13 more — see the full ingredients list above
Sodium C14-16 Olefin Sulfonate
Cleansing, Foaming
Low-hazard ingredient.Read moreShow less
EWG 2 CIR B CleansingFoamingSurfactant Sulfate
Glycerin
Denaturant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A DenaturantFragranceHair conditioningHumectantOral care agentOral health care drugSkin protectingViscosity decreasing agentPerfumingSolvent Good for Dry SkinFungal-acne trigger
Tocopheryl Acetate
Antioxidant, Skin conditioning
Potentially comedogenic - can block poresRead moreShow less
EWG 3 AntioxidantSkin conditioning Bad for Oily Skin
Glycol Distearate
Opacifying, Viscosity increasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A OpacifyingViscosity increasing agentEmollientEmulsifyingSkin conditioningViscosity controlling Fungal-acne trigger
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Methylisothiazolinone
Preservative
Higher-hazard ingredient.Read moreShow less
EWG 7 CIR B Preservative
Propylene Glycol
Fragrance, Humectant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B FragranceHumectantSkin-conditioningagent - miscellaneousSolventViscosity decreasing agentSkin conditioningViscosity controlling Good for Dry Skin
Panthenol
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentHair conditioningSkin conditioning Good for Dry Skin
Citric Acid
Chelating agent, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 2 CIR A Chelating agentFragrancePh adjusterBuffering agentMasking Bad for Sensitive Skin
Benzyl Benzoate
Fragrance, Solvent
Moderate-hazard ingredient.Read moreShow less
EWG 6 CIR A FragranceSolventAntimicrobialMasking Allergens
Benzyl Salicylate
Fragrance, Uv absorber
Higher-hazard ingredient.Read moreShow less
EWG 7 FragranceUv absorberMasking Allergens
Citronellol
Fragrance, Masking
Moderate-hazard ingredient.Read moreShow less
EWG 5 FragranceMasking Allergens
Coumarin
Fragrance, Masking
Higher-hazard ingredient.Read moreShow less
EWG 7 FragranceMasking Allergens
Hexyl Cinnamal
Fragrance, Masking
Moderate-hazard ingredient.Read moreShow less
EWG 5 FragranceMasking Allergens
Limonene
Deodorant, Perfuming
Moderate-hazard ingredient.Read moreShow less
EWG 6 DeodorantPerfumingSolvent Allergens
+ 1 more — see the full ingredients list above

How to use

How to use

  • 1 Morning only: Apply as the last step of your AM routine, after moisturiser, and reapply every ~2 hours of sun exposure.
  • 2 Wear SPF the next day: Acids and retinoids increase sun sensitivity — daily sunscreen is a must while using this.

General guidance from this product's category and active ingredients — always follow the directions on the package.

Trust & honesty

Pregnancy & breastfeeding

Contains ingredients some choose to avoid or double-check while pregnant or nursing.

Often avoided
Retinoids (Vitamin A) (Retinyl Palmitate)

Topical retinoids (retinol, retinaldehyde, retinyl esters) are widely advised against in pregnancy as a precaution. The strongest evidence is for ORAL retinoids; topical absorption is low, but most clinicians err on the side of caution.

This is general information, not medical advice. Pregnancy guidance varies and depends on concentration and your individual situation — always check with your doctor, midwife or pharmacist. How we flag this.

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

Retinoids (Vitamin A) 0.01–1%

Most studied between 0.1% and 1%. Higher is not automatically better — irritation climbs with dose, so a well-formulated lower strength is often the sweet spot.

Retinyl Palmitate

INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.

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