After researching various sources, here are some of the best non-toxic nail polish brands, along with their positive and negative aspects, and ingredients or materials:

1. TenOverTen: This brand is marketed as 10-free, meaning it is free of 10 of the most harmful leading polish ingredients. It is also marketed as having long-lasting wear, and it is one of the most affordable on the list. However, it takes a little longer to dry.

2. Sally Hansen GOOD.KIND.PURE: This brand is formulated without concerning nail polish ingredients, as well as benzophenone-1 and benzophenone-3. It also contains nourishing ingredients.

3. Kure Bazaar: This brand is marketed as 10-free and is made with up to 90% natural ingredients, including wood pulp, wheat, cotton, potatoes, and corn. It is also long-lasting and has a glossy finish.

4. Côte: This brand is marketed as 10-free and is made with natural ingredients such as myrrh extract, which is known to strengthen nails. It is also long-lasting and has a shiny finish.

5. Olive & June: This brand is marketed as 7-free and is made with a blend of natural and synthetic ingredients. It is also vegan and cruelty-free. It has a long-lasting wear and a shiny finish.

6. Zoya: This brand is marketed as 10-free and is vegan and cruelty-free. It also has a long-lasting wear and a glossy finish.

7. Butter London: This brand is marketed as 8-free and is made with a blend of natural and synthetic ingredients. It is also vegan and cruelty-free. It has a long-lasting wear and a shiny finish.

8. Pacifica: This brand is marketed as 7-free and is made with natural ingredients such as coconut oil and vitamin E. It is also vegan and cruelty-free. It has a long-lasting wear and a glossy finish.

9. Ella + Mila: This brand is marketed as 7-free and is vegan and cruelty-free. It is also made with natural ingredients such as lavender essential oil and vitamin E. It has a long-lasting wear and a shiny finish.

10. Smith & Cult: This brand is marketed as 8-free and is made with a blend of natural and synthetic ingredients. It has a long-lasting wear and a shiny finish.

It is important to note that some non-toxic nail polishes are marketed as "3-free," meaning they do not contain formaldehyde, toluene, or dibutyl phthalate, which are known disruptors. However, other brands go as far as being 10-, 14- or even 16-free, meaning they are formulated without a wider range of potentially harmful ingredients[[2]](https://www.goodhousekeeping.com/beauty/nails/g28834890/best-natural-non-toxic-nail-po...