Final answer:
Mascara darkens, thickens, lengthens, and defines eyelashes, enhancing the appearance of eyes.
Step-by-step explanation:
Mascara is a cosmetic product that is used to enhance the appearance of eyelashes and eyes. It darkens, thickens, lengthens, and defines the eyelashes. Mascara comes in liquid, powder, or cream form and contains pigments, oils, waxes, and preservatives. When applied to the eyelashes, mascara can make them appear longer, fuller, and more defined, which can enhance the overall appearance of the eyes.