NSI · Nail Polish & Top Coat
NSI Polish Pro Sampler Kit
Lower PFAS concern for typical nail polish; no evidence of Teflon-family coating use in this category.
NSI Polish Pro is a nail polish sampler kit. Nail polishes are not known to routinely contain PFAS or Teflon-family coating coatings in standard formulations. NSI makes no public PFAS disclosure either way, which is typical for the cosmetics category. No third-party testing data is publicly available for this specific product.
Shop NSI on Amazon →Material
nail polish (organic solvents, resins, pigments)
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
NSI Polish Pro Sampler Kit contains typical nail polish formulations: organic solvents (likely toluene, xylene, or acetone), film-forming resins (nitrocellulose, tosylamide-formaldehyde resin), plasticizers, and colorant pigments. These solvents and resins are industry-standard and have a long safety history in cosmetic use when applied in well-ventilated settings. The sampler format suggests multiple shades with various pigment bases (mica, iron oxides, synthetic dyes), each of which presents minimal risk at typical application volumes.
The brand's record and disclosure
NSI (a subsidiary of Douglas Labs, later owned by Coty) is a professional nail care brand with no documented major safety recalls or controversies in public health databases. The brand does not publicly advertise "3-free," "5-free," or higher solvent-reduction certifications, suggesting a traditional formulation approach without marketed toxin removal. No credible reports of heavy metal contamination, allergen disclosures, or regulatory enforcement actions are on record for this product line.
How it compares in its category
NSI Polish Pro occupies the mid-tier professional/salon segment; it is chemically comparable to major brands like OPI, CND, and Gelish in solvent and resin composition. Unlike "safer" or "clean" polish brands (Ella+Mila, Zoya, Butter London), NSI makes no specific solvent reductions, meaning exposure to traditional volatile organic compounds (VOCs) is typical for this price point. The sampler kit format is standard and carries no additional risk beyond individual polishes.
If you buy it
Apply in a well-ventilated space or with a nail fan to minimize inhalation of solvent vapors, particularly during application and drying. Store bottles tightly capped in a cool, dry place away from direct sunlight to prevent evaporation and thickening (which can indicate solvent loss or resin separation). Replace any polish that has thickened, separated, or developed a skin on the surface, as these indicate formula breakdown. Do not use on children; wash hands thoroughly after application, and avoid contact with eyes or mucous membranes.
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.”
Volatile organic compounds (VOCs) from solvents
Nail polish inherently releases toluene, xylene, and acetone during and after application. Acute inhalation in poorly ventilated spaces can cause dizziness, headache, and respiratory irritation; NSI makes no solvent-reduction claims, indicating standard formulation levels. Risk is manageable with ventilation.
Formaldehyde-releasing resins (tosylamide-formaldehyde)
Traditional nail polish often contains tosylamide-formaldehyde resin; NSI does not publicly disclose whether this ingredient is included or replaced. Formaldehyde is a known respiratory irritant and allergen. Exposure during application is typically brief and low-dose but cumulative for frequent users or nail technicians.
Heavy metal contamination in colorants
No recalls or documented instances of lead, cadmium, or arsenic in NSI products exist in FDA or CPSC records. Colorant pigments (mica, iron oxides, synthetic dyes) are regulated cosmetic ingredients, but trace contamination is theoretically possible in any mass-produced polish. Risk is not established for this brand.
Contact allergens and sensitizers in pigments or additives
Some individuals develop allergic contact dermatitis to nail polish ingredients, including resins, dyes, or preservatives (though nail polish contains minimal preservatives due to solvent content). NSI does not provide a full ingredient list for each shade in the sampler kit, limiting ability to identify specific allergens prior to purchase.
Cosmetic-grade talc or mica dust inhalation
Talc is not typically used in nail polish formulations; mica (a common spacer pigment in polishes) is cosmetic-grade and poses no established asbestos or talc contamination risk for NSI. Inhalation risk from finished polish application is negligible, but application in enclosed spaces without ventilation is still not recommended.
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 nail polish & top coat 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.