Caffeine reduces dark circles by constricting blood vessels and decreasing blood flow under the eyes. This effect minimizes the appearance of darkness and improves skin tone.
Caffeine, when applied topically, possesses vasoconstrictive properties. These properties constrict the blood vessels beneath the eyes, reducing blood flow to the area. This decreased blood flow minimizes the appearance of dark circles, resulting in a brighter and more even skin tone around the eyes.
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