Based on the search results, there is limited information available on the specific details of Wynn Nails and Spa products. However, some information can be gathered from the search results:

Positive:

• Wynn Nails and Spa is considered the best destination for nail services.
• Customers have reported being pleased with the customer service.
• The salon has a good selection of nail polish colors.

Negative:

• No negative information was found in the search results.

Ingredients or materials:

• The "Organic Pedicure" service includes soaking in an epsom salt and essential oil blend.
• The "Slim & Firm Serum" service includes natural ingredients that reduce fat and cellulite.

It is important to note that the search results did not provide a comprehensive list of ingredients or materials used in Wynn Nails and Spa products. It is recommended to contact the salon directly for more information.