The relationship between eyelash length and attractiveness can be described with an inverted U function, a recent study suggests. On female faces, longer eyelashes were more attractive than short lashes. In men, very long eyelashes were less attractive. Studies have shown that large eyes are more desirable in women.
Because long eyelashes accentuate your eyes making them look bigger, which is a symbol of youth that is often associated with greater attractiveness. Which leads us to say that long eyelashes are more attractive to both girls and boys.