* photosensitive condition or medication. * active chemotherapy treatment or other cancer treatment. * autoimmune disorder. * pregnant, possibly pregnant or planning pregnancy prior to the end of study participation. * developmental disability or cognitive impairment that, in the opinion of the investigator, would preclude adequate comprehension of the informed consent form and/or ability to record the necessary study measurements.

* photosensitive condition or medication. * active chemotherapy treatment or other cancer treatment. * autoimmune disorder. * pregnant, possibly pregnant or planning pregnancy prior to the end of study participation. * developmental disability or cognitive impairment that, in the opinion of the investigator, would preclude adequate comprehension of the informed consent form and/or ability to record the necessary study measurements.

- photosensitive condition or medication. - active chemotherapy treatment or other cancer treatment. - autoimmune disorder. - pregnant, possibly pregnant or planning pregnancy prior to the end of study participation. - developmental disability or cognitive impairment that, in the opinion of the investigator, would preclude adequate comprehension of the informed consent form and/or ability to record the necessary study measurements.

- photosensitive condition or medication. - active chemotherapy treatment or other cancer treatment. - autoimmune disorder. - pregnant, possibly pregnant or planning pregnancy prior to the end of study participation. - developmental disability or cognitive impairment that, in the opinion of the investigator, would preclude adequate comprehension of the informed consent form and/or ability to record the necessary study measurements.