red
Methylchloroisothiazolinone
European Society of Contact Dermatitis declared MI a "contact allergy epidemic." High allergen rates.
Low Tox Gear · Scanner
Scott Cornwall Hair Colour Remover each
Is Scott Cornwall Hair Colour Remover each low tox? Our scanner flagged 10 ingredients (1 in the avoid tier, 9 caution) on its published label, screened against our 237 source-cited chemical rules.
1 avoid9 caution
10 ingredients flagged
What we flagged
amber
Cocamidopropyl Betaine
Ostensibly 'gentle' but ACDS Allergen of the Year 2004. Contains DMAPA/amidoamine impurities.
amber
PEG-4 Rapeseedamide
Manufacturing process can leave 1,4-dioxane (probable carcinogen) and ethylene oxide as contaminants. Look for 'vacuum-stripped' products.
amber
Polyquaternium-7
Documented respiratory and skin sensitiser. Common MCAS and asthma trigger.
Svanes et al. Bergen Respiratory Health Study, Am J Respir Crit Care Med 2018
amber
Propylene Glycol
Common humectant. Documented contact allergen — especially for eczema-prone skin.
amber
PEG-40 Hydrogenated Castor Oil
Common solubiliser; same 1,4-dioxane contamination risk as other PEGs.
amber
Tetrasodium EDTA
Chelating agent — generally tolerated but documented MCAS trigger in case reports.
amber
Sodium Benzoate
Implicated in childhood hyperactivity studies and reported MCAS trigger.
Full ingredients (from label)
Precolour Shampoo Aqua (Water)Sodium Myreth SulfateCocamidopropyl BetaineSodium CocoamphoacetateLauryl GlucosidePEG-4 RapeseedamideBetaineGlycerinAscorbic AcidHyaluronic AcidHydrolyzed KeratinLeuconostoc/Radish Root Ferment FiltratePolyquaternium-7Propylene GlycolGuar Hydroxypropyltrimonium ChloridePEG-40 Hydrogenated Castor OilTetrasodium EDTALactic AcidSodium BenzoatePhenoxyethanolDehydroacetic AcidBenzoic AcidPotassium SorbateBenzyl AlcoholEDTAMethylchloroisothiazolinoneSodium ChlorideMethylisothiazolinoneLimoneneHydroxycitronellalParfum (Fragrance). Part 1 Activator AquaSodium Oxymethlene SulfoxylatePEG-40 Hydrogenated Caster OilHydroxyethyl CellulosePolysorbate 20GlycerinParfumPhenoxyethanolEthylhexylglycerinSodium HydroxideCitronellolHexyl CinnemalLinalool. Part 2 Remover AquaCitric AcidCetearyl AlcoholHydroxyethyl CellulosePolysorbate 20PEG-40 Hydrogenated Caster OilParfum PhenoxyethanolEthylhexylgycerinCocamidopropyl BetaineCtironellolHexyl CinnamalLinalool. Part 3 Conclude Balm Aqua (Water)Hydroxypropyl Starch PhosphateCetearyl AlcoholGlyceryl StearateWheat Amino AcidsSoy Amino AcidsArginine HClSerineThreonineGlycerinSodium Lauroyl GlutamateSodium Stearoyl LactylateLactic AcidCeteareth-20AmodimethiconeTrideceth-12Cetrimonium ChloridePropylene GlycolMyristyl LactatePolyquaternium-53Polyquaternium-22Benzyl AlcoholPotassium SorbateSodium BenzoateMethylchloroisothiazolinoneMethylisothiazolinonePhenoxyethanolHexyl CinnamalParfum (Fragrance).
How this analysis is generated
Each ingredient on this product's published label is matched against our 237 source-cited chemical rules, each documenting a concern from peer-reviewed research and regulatory sources. Severity tiers:
- Avoid (red) — banned or restricted in the EU, UK or Canada but still legal in the US, IARC-listed, or strong contact-allergen evidence.
- Caution (amber) — regulatory caution, contamination risk, or condition-specific irritant.
- Mild (green) — low concern but commonly avoided in low-tox formulations.
Each flag links to its primary chemical-level source, and each condition pill links to a PubMed-indexed paper that discusses the chemical class in the context of that condition. Every citation is a real peer-reviewed paper — we don't link to Wikipedia or PubMed search pages. Some pairs use a topically-broad paper (e.g. a fragrance-allergen patch-test review) rather than a single-pair study where the literature is thin. The full evidence chain (chemical → mechanism → condition → paper) is one click away.
This is automated analysis of a published label, not medical advice — always verify the label yourself before changing products. Methodology and source list at scan.lowtoxgear.com.