You can't actually increase your eye size permanently, as eye size is largely determined by genetics. However, you can create the illusion of bigger eyes using makeup techniques and other methods.
Makeup Techniques to Make Eyes Appear Larger
Several makeup techniques can enhance the appearance of larger eyes. These methods focus on creating visual effects that emphasize the eye's features:
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Shape your eyebrows: Well-groomed eyebrows frame the eyes and significantly impact their perceived size. Tweezing or shaping your brows to create a flattering arch can open up the eye area (Reference 1).
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Conceal dark circles: Dark circles under the eyes can make them look smaller and tired. Concealer helps brighten the under-eye area, creating the illusion of larger, more awake eyes (Reference 2).
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Add volume to your lashes: Fuller, longer lashes create a more dramatic eye look that emphasizes the eyes' size. Mascara or false lashes can significantly enhance this effect (Reference 3).
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Use eyeliner strategically: Applying eyeliner can emphasize the shape of your eye. A thin line (Reference 7) is generally more effective in making eyes look larger than a thick one. Using eyeliner on the upper lash line is preferred, while using it on the lower lash line may even diminish the appearance of larger eyes.
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Highlight the inner corner: Applying a light-colored shimmery shadow or highlighter to the inner corner of the eyes brightens the area, reflecting light and creating an illusion of more open eyes (Reference 5).
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Create a defined crease: Proper eye shadow application, particularly in the crease of the eyelid, can help enhance the three-dimensionality of your eye shape, making them appear larger (Reference 6).
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White eyeliner: Applying white eyeliner to your lower waterline can also make your eyes appear larger and brighter (Reference 4, Quora).
Contact Lenses
Circle contact lenses are another option to create the impression of larger eyes. These contacts extend slightly beyond the iris, covering more of the white sclera, which creates the illusion of bigger eyes (Reference 3, wikiHow). Remember that purchasing and using contact lenses requires professional eye care guidance.
Scientific Perspective on Eye Size
While you can't change the physical size of your eyes, it's important to note that eye size is a complex biological characteristic. Eye size can influence visual acuity; larger eyes generally offer improved vision (Reference 9, 10). In some species, eye size shows adaptive responses to environmental factors, like predation risk (Reference 7, 8). Postnatal development also plays a significant role in eye size determination (Reference 8).