While standard mascaras do the trick in lengthening, volumizing, darkening, and separating your lashes, waterproof mascaras are better suited for long-wear and durability. Waterproof mascara itself is always safe for lashes, but the product tends to be more difficult to remove when it comes time to wash off your makeup, posing potential distress to your lashes. "There are some tradeoffs in using waterproof mascaras; some might take a little longer to dry, meaning lashes coated with the product that touch each other might stick together," says Dobos.