Scientists have determined the optimal standard for eyelash length, finding that the longer they are, the more beautiful they appear, but only up to a certain point. According to researchers from Britain and Canada, eyelashes that are "one-third the width of the eye" are perceived as most attractive. This length enhances the face and particularly the eyes.
These conclusions were preceded by simple experiments involving over 300 male and female volunteers, whose average age was just over 40 years. A study featured in Scientific Reports investigated preferences for female eyelash lengths. Results indicated that an eyelash length equal to one-third of the eye's width was perceived as most attractive across all races.
Experts created four faces representing White, Black, Asian, and Indian women. Each was then "copied" into 11 versions differing in eyelash length. Volunteers were asked to rate them on a scale from 1 to 7, with the most attractive faces receiving higher scores. It became clear that eyelashes measuring one-third of the eye's width (about 30-35%) adorned the face most beautifully.
Subsequent American experiments revealed that this "ideal practical" standard is inherently universal, applicable not only to humans but also to animals, regardless of their size, ranging from hedgehogs to giraffes.
