Wheatgrass has a long history of use in traditional and alternative medicine, particularly as a general health tonic and detoxifying agent. Its use for skin conditions such as psoriasis is primarily rooted in anecdotal reports and traditional practices rather than robust scientific evidence. Proponents claim that wheatgrass, due to its high content of chlorophyll, vitamins, minerals, and antioxidant compounds, may help reduce inflammation and support skin healing. Some traditional practitioners and users believe that drinking wheatgrass juice or applying wheatgrass-based creams can alleviate the symptoms of psoriasis, including scaling, itching, and redness.

However, the scientific evidence supporting wheatgrass specifically for psoriasis is very limited. There are very few clinical studies, and most available reports are either small case studies or anecdotal in nature. While wheatgrass does possess antioxidant and anti-inflammatory properties in vitro and in animal models, these findings have not been conclusively translated to human trials for psoriasis. Systematic reviews and dermatological guidelines do not currently recommend wheatgrass as a validated treatment for psoriasis. Therefore, its use is based more on traditional practice and personal testimony than on scientific validation.