Peter Thomas Roth Lashes To Die For Turbo Conditioning Lash Enhancer is a high-performance lash enhancer that helps improve the appearance of lashes. This conditioning lash enhancer is formulated with a blend of peptides, vitamins, and botanical extracts that nourish and strengthen lashes. With regular use, you can expect to see longer, thicker, and more voluminous lashes. The lash enhancer has a lightweight formula that is easy to apply and is suitable for all skin types. It is also ophthalmologist-tested and safe for use with lash extensions.