General hair loss:
American Hair Loss Association
Hair Loss Talk
American Hair Loss Council
Alopecia-related hair loss:
National Alopecia Areata Foundation
Alopecia World
Her Alopecia
Children’s Alopecia Project
Wigs and head coverings:
Women’s Wig Solutions
Headcovers Unlimited
Hair Source Inc.
Hats, Scarves and More
Freedom Wigs
New Hair Technology
Beauty Trends
Best Wig Outlet
Follea Wigs
Permanent makeup:
U.S. Food and Drug Administration FAQ
Permanent Makeup Clinic FAQ