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Contains ingredients with possible health concernsSTOP
Contains harmful ingredientsSTOP
NailTek
Formula 4 Strengthen Nail Treatment
Last verified: March 18, 2026
- Ethyl Acetate
- Alcohol Denat.
- Butyl Acetate
- Nitrocellulose
- Tosylamide/Formaldehyde Resin
- Acrylates Copolymer
- N-Butyl Alcohol
- Triphenyl Phosphate
- Trimethyl Pentanyl Diisobutyrate
- Isopropyl Alcohol
- Formaldehyde
- Benzophenone-1
- Hydrolyzed Wheat Protein
- Dimethicone
- Calcium Pantothenate
- Violet 2 (CI 60725)
Why This Product is Rated STOP
Formula 4 Strengthen Nail Treatment by NailTek has been evaluated by Million Marker and contains ingredients with known health concerns. This product is rated STOP, indicating higher concern.
We recommend avoiding STOP-rated products and seeking safer alternatives from our GO or SLOW categories.
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