What corrective makeup technique is applied to enhance close-set eyes?

To enhance close-set eyes, the most effective technique is to extend the eye shadow to the outer corners. This technique visually stretches the appearance of the eye shape, making the eyes look wider apart. By focusing color towards the outer edges, it creates an illusion of greater distance between the eyes.

Consider other techniques mentioned: while applying darker colors on the inner corners or using lighter colors all over the eyelid may serve different purposes or enhance certain features, they do not specifically address the correction for close-set eyes. Additionally, lining the inner waterline with white is more suited for brightening the eyes but doesn't contribute to altering the perception of space between them. Therefore, extending eye shadow to the outer corners is the most effective corrective technique in this case.