Lancome Definicils Mascara Waterproof
Waterproof mascara, coating unspecified. Lancôme provides no PFAS disclosure.
Waterproof mascaras often use synthetic polymers or silicone-based coatings; Lancôme does not disclose PFAS status. Limited public data on this specific formulation. Contact brand for ingredient transparency if concerned.
The safe swap
Burt's Bees
Burt's Bees 100% Natural Nourishing Mascara, Black Brown
75/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Waterproof film-forming resins and pigment suspension, unspecified coating
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Waterproof / stain-resistant treatment
water-repellent coating treatments have historically used PFAS.
Category baseline
cosmetics is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
1,4-dioxane (solvent contaminant)
Waterproof mascaras often rely on stronger solvents or emulsifiers that may be contaminated with 1,4-dioxane as a byproduct; Lancôme does not publicly test for this. Risk is low but not ruled out in undisclosed formulations.
Formaldehyde / VOCs
Waterproof mascaras may use stronger preservative systems; formaldehyde releasers are permitted in cosmetics but not disclosed by brand. Lancôme does not specify preservative type.
Source: ATSDR ↗Fragrance allergens and irritants
Cosmetic fragrances in mascaras can trigger eye irritation or contact dermatitis in sensitive users. Lancôme lists fragrance as an ingredient but does not break down allergens; case reports of irritation from waterproof mascaras exist in dermatological literature.
Lash and eye irritation from incomplete removal
Waterproof mascaras are harder to remove completely; residual polymer buildup can cause lash breakage, follicle inflammation, and bacterial conjunctivitis if removed carelessly or infrequently.
What’s reassuring
Heavy metals
No documented cases of lead or cadmium contamination in Lancôme mascaras. Iron oxides are standard approved colorants, but independent testing of this specific product is not available.
Source: FDA ↗The full breakdown
What it's made of and why it matters
Definicils Waterproof uses film-forming resins and pigment suspensions to create a water-resistant coating on lashes. The exact polymer base is not disclosed by Lancôme, meaning the waterproofing mechanism (whether silicone-based, acrylic, or synthetic hydrocarbon resins) is unclear. Waterproof mascaras typically require stronger film-formers and solvents than regular formulas, which can increase risk of ingredient concentration or residual solvents. The pigments and any preservatives used are standard cosmetic-grade materials but concentration details are proprietary.
The brand's record and disclosure
Lancôme is part of L'Oréal, a major cosmetics conglomerate, and generally complies with EU and US labeling regulations. However, the brand does not publicly disclose PFAS content or provide third-party safety certifications for individual products. Lancôme has not faced major documented safety recalls or heavy metal contamination incidents in recent years, but maintains minimal transparency on waterproofing agent composition. The brand does not publish ingredient sourcing or manufacturing safety data sheets for consumers.
How it compares in its category
Definicils is a mid-to-premium waterproof mascara; most competitors in this tier (MAC, Urban Decay, Clinique) also do not disclose waterproofing polymer identity. Waterproof mascaras as a category pose higher uncertainty around solvents and film-formers compared to regular mascaras, since water resistance requires chemical trade-offs. Lancôme's formula is typical for department-store mascaras in opacity and longevity claims. Brands offering certified clean or PFAS-transparent mascaras (e.g., Ilia, RMS Beauty) are rarer and typically cost more.
If you buy it
Remove with proper makeup remover (oil-based or micellar water); incomplete removal can lead to lash buildup and irritation over weeks. Replace mascara every 3 months, as waterproof formulas can dry out faster and harbor bacterial growth in the tube. Avoid applying to waterline or sensitive eye areas if you have reactive skin, since waterproof resins may irritate delicate mucous membranes. Do not expose tube to heat or direct sunlight, as film-forming polymers can degrade or separate.
What we don’t know
- Basis
- Model estimate, 35% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Lancôme has made none
Formulations change between production runs, so check the current label. How we grade.
Safer alternatives in Waterproof Mascara
Burt's Bees
100% Natural Nourishing Mascara, Black Brown
Wax, pigments, natural oils (typical mascara base)
Fragrance allergens and undisclosed sensitizers
Limited concern
Bacterial growth and contamination in wax formula
Limited concern
Lower concern; conventional non-waterproof formula with no identified PFAS drivers.
⚠Risky category by default
More waterproof mascara 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.