I found several search results that provide information about nail polish products, their ingredients, and other details. Here are the key points from each source:

https://fedandfit.com/safer-nail-polish-guide/

• 10-free nail polish is free of 10 of the most harmful leading polish ingredients.
• Essie is considered “3-free” (free of toluene, formaldehyde, and DPB) but it also has several ingredients that are not recommended.
• It’s tough to find exact details on what non-toxic means in marketing materials.
• Poofy Organics Nail Polish is another non-toxic nail polish with a low EWG rating.
• NCLA Nail Polish is 7-free (making it free of Toluene, Camphor, and 5 other harmful chemicals).

https://ireadlabelsforyou.com/opi-nail-polish-ingredients-review/

• OPI Nature Strong line is reportedly cruelty-free and vegan.
• OPI nail polishes are “9-free” (free of 9 harmful chemicals).

https://lexiscleankitchen.com/safe-nail-polish-guide/

• Nail polish manufacturers are not required to list their ingredients anywhere on their products or marketing materials.
• Parabens, Hydroquinone monomethyl ether (MEHQ/HQ), and Methylisothiazolinone (MIT) / methylchloroisothiazolinone (CMIT) are some of the harmful chemicals found in nail polish.
• Generally speaking, your best bet for a safe manicure will be a polish that lists its ingredients or that is described as “10-free+.”

https://womensvoices.org/2015/05/18/nail-products-polishes-that-contain-chemicals-of-concern/

• Some nail products and polishes contain toxic chemicals linked to cancer and reproductive harm.
• Fisk Industries Inc, Barielle, and Palladio are some of the brands that produce nail products and polishes that contain toxic chemicals.

https://www.amazon.com/Karlash-Quick-Drying-Super-Polish/dp/B08NXXJCN2

• Karlash Quick Dry Fast Drying Super Shiny Nail Polish Top Coat is a product that makes nail polish adhere to nails better and last longer, prevents nails from staining or yellowing, and helps strengthen nails so they are less likely to break.

https://www.salonsdirect.com/blog/guide-to-vegan-cruelty-free-nail-polish-for-salons/

• Vegan nail polish uses natural or man-made substances in place of animal-derived ingredients.
• Cruelty-free nail polish is not tested on animals.
• Non-toxic nail polish is free from formaldehyde, acetone, and parabens.
• Gellux has created a gel polish range which is suitable for vegans, cruelty-free, and free of harsh ingredients that can damage nails.

In summary, nail polish products can contain harmful chemicals that can cause health problems. It is best to choose nail polish products that are free of harmful chemicals, vegan, cruelty-free, and non-toxic. Some of the recommended brands include Poofy Organics Nail Polish, NCLA Nail Polish, and Gellux.