Based on the search results, there is no information available about a nail care pen test Stiftung Warentest product. However, the search results provide some information about nail care products, their ingredients, and how to use them safely.
According to the FDA, nail products for both home and salon use are regulated by the Food and Drug Administration. By law, nail products sold in the United States must be safe for consumers when used according to directions on the label, or in the usual or customary way. Many nail products contain potentially harmful ingredients, but are allowed on the market because they are safe when used as directed. Some common nail product ingredients include:
- Toluene: a solvent that helps dissolve other ingredients and give nail polish a smooth finish.
- Formaldehyde: a preservative that helps prevent bacterial growth.
- Dibutyl phthalate (DBP): a plasticizer that makes nail polish flexible and less likely to chip.
- Camphor: a plasticizer that makes nail polish flexible and less likely to chip.
- Triphenyl phosphate (TPHP): a plasticizer that makes nail polish flexible and less likely to chip.
Some people may become allergic to certain nail product ingredients, such as toluene sulfonamide/formaldehyde resin (TSFR) used in some nail polishes to make the coating tough and resilient.
It is important to use nail products safely, following labeled directions and paying attention to any warning statements. If you experience any adverse reactions to nail products, you should report them to the FDA.
