amber
Ingredients: Cyclomethicone
Mixture of cyclic siloxanes — typically D4/D5.
Low Tox Gear · Scanner
MCoBeauty Precision Brow Super Fine Liner 0.22g
Is MCoBeauty Precision Brow Super Fine Liner 0.22g low tox? Our scanner flagged 4 ingredients (4 in the caution tier) on its published label, screened against our 237 source-cited chemical rules.
4 caution
4 ingredients flagged
What we flagged
amber
Cyclopentasiloxane
EU PBT (persistent, bioaccumulative, toxic). Restricted in rinse-off cosmetics.
amber
Phenoxyethanol
Preservative — generally well-tolerated but documented as MCAS and contact-dermatitis trigger in sensitive individuals.
amber
Titanium Dioxide Ci77891
Banned as a food additive in the EU (2022) due to nano-particle genotoxicity concerns. Inhalation classified IARC Group 2B.
Full ingredients (from label)
INGREDIENTS: CyclomethiconeCeresinEuphorbia Cerifera (Candelilla) WaxCetyl AlcoholIsododecaneCyclopentasiloxaneTocopheryl AcetatePhenoxyethanol.<BR>MAY CONTAIN (+/-): Iron Oxides (CI77492, CI77491, CI77499)Titanium Dioxide CI77891.
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.