The "Press & Go" lashes are a type of false eyelashes that do not require glue for application. They are designed to be easily pressed on and offer a strong hold without the need for adhesive. The lashes come in various styles, such as voluminous and natural, and are available in kits that include the lash clusters and a mini applicator. The specific ingredients or materials used in these lashes are not explicitly mentioned in the provided search results.