Old man’s beard is a lichen that grows on old trees in damp areas. It is profuse in the Pacific Northwest. It is regarded as an immune tonic for long-term immune enhancement or acute conditions, particularly those involving the respiratory and urinary systems.
Supercritical extractions are very concentrated so the recommended dilution of Usnea is 0.2-0.6% in a carrier fluid. The extract dissolves and disperses easily. Usnea is typically used as an antifungal and/or antimicrobial addition to a preparation made with water, wine, alcohol, or oil for internal or topical use.
Traditionally, usnea is regarded as a strong treatment best administered under the supervision of a qualified health care professional, however, there are some safe uses such as a douche with only a drop or two per use. It can also be mixed with a carrier and use topically for wound healing. These are safe, but longer-term use should be overseen by a professional.