There is no evidence-based medical evidence about the effectiveness of patchouli for eczema. The choice of topical drugs for eczema needs to be based on the form of the rash, such as rash only erythema, papules, and no exudate, you can choose powder, lotion, cream, etc.; such as vesicles, exudate is the main, you need to choose the solution wet; such as skin hypertrophy, moss-like changes, you need to apply ointment, hard cream, tincture, coating agent, etc., such as no rash only itching, you can choose emulsion, tincture, etc.. So not any form of eczema, the application of the same form of topical medication are effective, not based on the rash form of the choice of topical medication sometimes may even aggravate the rash. In addition, patchouli contains alcohol, which is irritating to some forms of rashes.