Plant that contains several components that can cause a negative reaction on skin in the presence of sunlight. Any product that contains St. John’s wort should be followed by application of a broad-spectrum sunscreen. 
St. John’s wort’s association with improving depression when taken as an oral supplement is unrelated to its topical impact on skin. However, it does have potent antioxidant properties. 
In terms of skin healing, research has shown that St. John’s wort enhances the process while minimizing pain, making it a suitable option for helping to minimize the formation and ultimate appearance of scars. St. John’s wort also has antifungal and antibacterial activity. 
- Boiy A, Roelandts R, van den Oord J, de Witte P. Photosensitizing activity of hypericin and hypericin acetate after topical application on normal mouse skin. Br J Dermatol.
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- Saddiqe Z, Naeem I, Maimoona A. A review of the antibacterial activity of Hypericum perforatum L. J Ethnopharmacol. 2010;131(3):511-21.