Charlotte Tilbury · Eyeliner
Charlotte Tilbury Rock N Kohl
Lower PFAS concern; no red flags in typical eyeliner chemistry.
Rock N Kohl is a pencil eyeliner with standard pigment and wax chemistry, no inherent PFAS triggers like waterproofing coatings or Teflon-family coating binders. Charlotte Tilbury has not disclosed PFAS-related practices.
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talc, mica, iron oxides, waxes (typical eyeliner formulation)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
cosmetics is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
Rock N Kohl is a talc-based pencil eyeliner with mica, iron oxides, and waxes as binders and colorants. Talc is a common inert mineral filler in cosmetics and is generally recognized as safe for external eye use, though talc sourcing and processing quality varies by manufacturer. Mica adds shimmer and improves texture; iron oxides are FDA-approved colorants with low bioavailability on the eyelid. The wax base (typically carnauba or paraffin) provides spreadability and wear.
The brand's record and disclosure
Charlotte Tilbury does not publicly disclose detailed ingredient sourcing, heavy metal testing results, or PFAS avoidance commitments on this product line. The brand has no major recalls or regulatory actions on record for eyeliners. As a prestige cosmetics house owned by Estee Lauder Companies, it follows EU and US cosmetic regulations, but transparency on talc sourcing and heavy metal limits is minimal compared to some competitors.
How it compares in its category
Talc-based pencil eyeliners are the industry standard and carry similar hazard profiles to most competitors in the mass-prestige segment. Some premium brands offer talc-free, graphite-based, or silica-based alternatives; others are more transparent about talc sourcing and testing. Rock N Kohl is typical in formulation and risk profile, neither notably safer nor riskier than comparable prestige pencil liners from brands like Urban Decay, MAC, or Bobbi Brown.
If you buy it
Apply only to the eyelid and eyeliner; avoid contact with the eye itself and mucous membranes. Replace pencil eyeliners every 3 months or sooner if the tip becomes jagged or contaminated, as wooden pencils can harbor bacteria if sharpened improperly. Do not share with others. If you have talc sensitivity or a history of ovarian cancer concerns, consider a talc-free alternative, though epidemiological evidence for non-genital talc use remains inconclusive.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Talc contamination (asbestos)
Talc deposits can contain naturally occurring asbestos fibers. Charlotte Tilbury does not publicly confirm asbestos-free sourcing or third-party testing for this product. Risk via eyeliner application is low (small amount, external application, minimal inhalation), but sourcing transparency is absent.
Heavy metals in iron oxide pigments and talc
Iron oxides and talc can contain trace lead, cadmium, or chromium depending on source geology and processing. No recalls or reported contamination for this specific product on record. Regulatory limits for cosmetic colorants are enforced, but Charlotte Tilbury does not disclose independent heavy metal testing results.
Formaldehyde releasers in preservatives
Eyeliner formulations may contain diazolidinyl urea, DMDM hydantoin, or imidazolidinyl urea (formaldehyde-releasing preservatives). Charlotte Tilbury's full preservative system is not disclosed on the product label or website. Risk of sensitization is low but possible with repeated use.
Fragrance allergens or undisclosed fragrance components
Rock N Kohl pencil liners typically contain minimal fragrance, but if present it would be listed as 'fragrance' without component breakdown. No known fragrance sensitivities linked to this product, but individuals with fragrance sensitivity should test first.
Mica dust inhalation during sharpening
Sharpening a pencil eyeliner creates dust; mica particles are typically considered inert but inhaling fine mineral dust in high concentration is not ideal. Use a pencil sharpener designed for cosmetics and sharpen in a well-ventilated area. Risk is minimal with normal use.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
More eyeliner grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.