Inclusion Criteria:  Provision of a signed and dated informed consent form Stated willingness to comply with all study procedures and availability to attend study visits for the duration of the study English-speaking 18-90 years of age Score of a 2 or higher in one of the four areas assessed on the Dry Skin Area and Severity Index (DASI)  Exclusion Criteria:  Current self-reported pregnancy or active intent to conceive Current lactation Fever within 7 days of study enrollment Self-reported use of systemic antibiotics (oral or injectable) in the past 6 weeks. Any clinically significant medical or psychological disorder, condition, or disease that in the opinion of the investigator exposes the subject to unacceptable risk by participating in the study or interferes with the subject's ability to complete the study.