This article is from the Alternative Medicine Therapies guide.
Color therapists are not licensed or accredited by any state or any professional organization. The originators of each method have established their own training programs with wide variations in content and standards. It is best to choose a practitioner with recognized qualifications in a related field, who is using color only as an adjunct to a conventional treatment. An M.D., psychologist, or qualified counselor might fit this category.
If you are interested in light therapy for SAD, it is usually administered (or recommended for home use) by a physician or psychologist. Look for a clinician with experience in this area.