Send a Check by Mail Your donation to NAAF will help support people with alopecia areata, provide education, and fund research for new and improved alopecia areata treatments. Any donation, large or small, helps. If you would prefer to send your gift by mail, please send a check (no cash, please) to: National Alopecia Areata Foundation PO Box 1270 Suisun City, CA 94585 Remember to check if your employer matches charitable donations. You can search on the NAAF’s Employer Matching page to look for your company.