Elle Nail Salon is not mentioned in the search results. However, there is information on nail polish products, ingredients, and materials. Here are some details on nail polish products, their ingredients, and materials:

• Sally Hansen nail polish: considered “3-free” (free of toluene, formaldehyde, and DPB), but it also has some ingredients that aren’t the safest, like triphenyl phosphate. This ingredient is considered a toxic ingredient and may lead to allergies. The EWG Skin Deep Cosmetic database gives Sally Hansen a score of 8, which is in the highly hazardous category.

• Revlon nail polish: 10-free (free of 10 of the most harmful leading polish ingredients). It is marketed as having long-lasting wear, and it is tough to find exact details on what this means. It is one of the most affordable on the list.

• Ella + Mila Nail Polish: 7-free, low in odor, vegan, and cruelty-free. It is extremely chip-resistant and scored a 6 in EWG, one of the highest of the “safer” polishes on the market. There are no certifications for this polish in the EWG database.

• Gel nail polish: it is virtually indestructible, impossibly glossy, and offered at nearly every nail salon. However, some polishes contain carcinogens that are present in many polishes, such as formaldehyde, toluene, and dibutyl phthalate (DBP). Most all professional-grade nail polishes manufactured today do not contain these “nasties” .

• Nail polish ingredients: some potentially hazardous chemicals found in nail salon products include acetone, acetonitrile, and formaldehyde. Employers and workers can take steps to protect health when working with products that contain potentially hazardous chemicals. Whenever possible, use products with the least hazardous chemicals in them.

In summary, nail polish products can contain potentially hazardous chemicals, and it is important to choose products with the least hazardous chemicals in them. Some nail polish brands are marketed as "safer" and are free of certain harmful ingredients. Gel nail polish is virtually indestructible and impossibly glossy, but some polishes contain carcinogens.