Haircare Ingredient Checker

Wondering if your shampoo, conditioner, or styling products contain harmful ingredients? Our Haircare Ingredient Checker makes it easy to find out! Simply copy and paste a product’s full ingredient list into the checker, and we’ll instantly flag harsh sulfates, silicones, drying alcohols, and other potentially damaging ingredients. No more guessing—get clear, confident results in seconds!

Ready to check your products? Paste the ingredients into the Haircare Ingredient Checker below and click “Analyze” to reveal hidden hair-damaging ingredients.

*We’ve tested our Haircare Ingredient Checker to identify hair-damaging ingredients and found it to be very accurate. However, due to variations in ingredient lists and terminology, we can’t guarantee 100% accuracy. We recommend cross-referencing your products with the full ingredient list provided below for the most reliable results.

 
Haircare Ingredient Checker

What Are Hair-Damaging Ingredients?

Hair-damaging ingredients are substances commonly found in haircare products that can strip moisture, weaken the hair shaft, cause buildup, or irritate the scalp. These ingredients may make your hair feel smooth or clean at first, but over time, they can lead to dryness, breakage, dullness, or even hair loss.

Some of these ingredients, like sulfates, remove too much natural oil, while others, like silicones and waxes, create heavy buildup that prevents moisture from penetrating the hair. Harsh preservatives and synthetic fragrances can also trigger scalp irritation and sensitivities.

By avoiding hair-damaging ingredients, you can maintain healthier, shinier, and stronger hair—without the hidden risks.

Damaging Haircare Ingredients List

Here is a list of common hair-damaging ingredients, organized alphabetically for easy reference. Check your haircare products against this list to ensure you’re avoiding culprits that could be harming your hair.

  • Amines – Similar to alkanolamines, these may be irritants.
  • Alcohol Denat. (Denatured Alcohol) – A drying alcohol that can make hair brittle.
  • Aliphatic Alcohols/Hydrocarbons – Can be drying or irritating.
  • Alkanolamines – May cause irritation in some people.
  • Ammonium Lauryl Sulfate (ALS) – Harsh sulfate that strips moisture and causes dryness.
  • Ammonium Laureth Sulfate (ALES) – Milder than ALS but still drying over time.
  • Amodimethicone – A silicone that can cause buildup, making hair dull and heavy.
  • Artificial Fragrance – Can include phthalates and cause sensitivities or irritation.
  • Bromates – Chemical compounds that may cause irritation or other issues.
  • Coal Tar – A harsh chemical used in dandruff shampoos, linked to skin irritation and safety concerns.
  • Cyclopentasiloxane – A lightweight silicone that can accumulate on hair over time.
  • Cyclohexasiloxane – Another silicone that can prevent proper moisture absorption.
  • DEA (Diethanolamine) – A surfactant that may be irritating to the skin.
  • Diazolidinyl Urea – A formaldehyde-releasing preservative (similar to Imidazolidinyl Urea).
  • Disodium Laureth Sulfosuccinate – A milder sulfate alternative.
  • Diglycols – Can be irritating and drying to skin.
  • DMDM Hydantoin – A formaldehyde-releasing preservative.
  • Elastomer – Synthetic material that could cause irritation.
  • Ethanol – A short-chain alcohol that quickly evaporates and dehydrates hair.
  • Fluor – Found in some products and may cause sensitivities.
  • Formaldehyde – A harsh preservative linked to scalp irritation and hair thinning.
  • Fragrance (Parfum) – A mix of synthetic chemicals that can irritate the scalp.
  • Fumarates – May cause irritation in some formulations.
  • Glycols – Used in many products but can cause irritation.
  • Imidazolidinyl Urea – A formaldehyde-releasing preservative that can cause irritation.
  • Isopropyl Alcohol – Another drying alcohol that can weaken hair structure.
  • Lanolin – A heavy wax that can cause buildup, especially in fine hair.
  • Linalool – A fragrance ingredient that can trigger sensitivities.
  • Limonene – Another fragrance compound known to irritate sensitive scalps.
  • Methylparaben – A paraben preservative linked to potential hormone disruption.
  • Mineral Oil – A heavy oil that can coat hair and prevent moisture absorption.
  • Metacrylate – Can cause skin irritation and other issues.
  • Nitrates – Chemical compounds that may cause irritation.
  • Nitriles – May have toxic effects.
  • Nitrosamines – Can be carcinogenic.
  • Nitrosamine Releasers – Can lead to toxic nitrosamines over time.
  • Nylon – Not typically harmful but can cause sensitivities in some cases.
  • PABA (Para-Aminobenzoic Acid) – Can cause allergic reactions, especially in sunscreens.
  • Petrolatum (Petroleum Jelly) – A waxy substance that creates heavy buildup.
  • Phthalates (specifically Diethylphthalate – DEP) – A group of chemicals that can be hidden under “Fragrance,” potentially affecting the liver, kidneys, and reproductive system.
  • Polyacrylamide – May cause irritation in some formulations.
  • Polyquaternium – Can cause buildup or irritation for sensitive scalps.
  • PPGs (Polypropylene Glycol) – Can be irritating and drying.
  • Propylparaben – A paraben that may contribute to scalp irritation and hormone issues.
  • Quaternium-15 – A formaldehyde-releasing preservative that can irritate the scalp.
  • Sodium Cocoyl Isoethionate – A milder detergent, but still similar to sulfates.
  • Sodium Hydroxymethylglycinate – A preservative that can also release formaldehyde.
  • Sodium Lauroyl Isoethionate – Another sulfate-like detergent.
  • Sodium Lauroyl Methyl Isoethionate – Another variant of sulfate-like detergent.
  • Sodium Lauroyl Sarcosinate – A milder sulfate alternative.
  • Sodium Lauroyl Taurate – A sulfate-like detergent.
  • Sodium Lauryl Sulfate (SLS) – A harsh sulfate that strips hair of natural oils.
  • Sodium Lauryl Sulfoacetate – A sulfate-like detergent that may be considered a “sulfate cousin.”
  • Sodium Laureth Sulfate (SLES) – A milder sulfate but still drying over time.
  • Styrene – A compound that can be irritating to the skin.
  • Synthetic AHAs/BHAs (Alpha Hydroxy Acids/Beta Hydroxy Acids) – Can be irritating or sensitizing to the skin.
  • Synthetic Chelating Agents – May cause irritation or sensitivity.
  • Synthetic Sunscreens – May cause irritation or hormonal disruption.
  • Triclosan – An antibacterial agent that can disrupt scalp balance and cause irritation.
  • Trimethicone – A silicone that coats hair and causes long-term buildup.

Check out our other free Ingredient Checkers.

Haircare Ingredient Checker ker