Cucumber has been used traditionally to support eye health, especially in treating puffiness and soothing tired eyes. The most common practice involves placing cool cucumber slices over closed eyelids. This method is rooted in folk remedies and spa traditions rather than robust scientific research. The primary reason for using cucumber in this context is its high water content and cooling effect, which can help reduce swelling and provide temporary relief from puffiness or irritation. Cucumber also contains antioxidants and flavonoids, which, in theory, might reduce irritation. However, clinical studies specifically evaluating cucumber’s direct benefits for eye problems are lacking. Most available evidence is anecdotal or based on the general properties of cold compresses, which can reduce swelling by constricting blood vessels. Some minor studies suggest that the ascorbic acid and caffeic acid in cucumber might reduce skin irritation and swelling, but these studies do not focus specifically on eye conditions. In summary, while cucumber is widely used traditionally to support minor eye issues like puffiness and irritation, there is limited scientific validation for its efficacy beyond the benefits of simple cold therapy and hydration. It is important to note that cucumber should not be used to treat serious eye problems or infections, where medical attention is necessary.