Posh Lashes is a brand that offers professional eyelash extensions and filling products. However, it is unclear from the search results whether there is a specific product called "Posh Lashes" or if it is a general term for the brands products. Therefore, it is difficult to provide specific details about a product called "Posh Lashes."
Regarding lash products in general, synthetic fibers and nylon are common materials used for false lashes. Some products use ultra-fine Korean silk fiber, which is a good alternative to animal hair. It is important to avoid oil-based products when using lash extensions, as they can damage the adhesive.
In summary, it is unclear from the search results what specific product is being referred to as "Posh Lashes." However, synthetic fibers and nylon are common materials used for false lashes, and it is important to avoid oil-based products when using lash extensions.
