Hempseed oil is a rich and balanced source of omega-6 and omega-3 polyunsaturated fatty acids. It has been used as a food and medicine for at least 3000 years in China.
Dietary hempseed oil and olive oil were compared in a 20-week randomized, single-blind crossover study with atopic patients. The researchers found significant improvement in skin barrier, itchiness, and dryness, and also found that the patients on the hempseed oil used less topical medication.
[Reference: Callaway J, Schwab U, Harvima I, Halonen P, Mykkänen O, Hyvönen P, Järvinen T. Efficacy of dietary hempseed oil in patients with atopic dermatitis. Journal of Dermatological Treatment. 2005 Apr 1;16(2):87-94.]
Link to pdf handout: Hempseed Oil Handout