38 citations,
June 2015 in “PubMed” Calcipotriol cream can effectively and safely treat mild-to-moderate patchy hair loss.
105 citations,
June 2014 in “British journal of dermatology/British journal of dermatology, Supplement” 
51 citations,
January 2012 in “Annals of dermatology/Annals of Dermatology” A boy with alopecia regrew hair using a vitamin D cream after other treatments failed.
66 citations,
May 2011 in “Dermatologic therapy” Guidelines help design better trials to compare alopecia areata treatments.
53 citations,
May 2011 in “Dermatologic therapy” Alopecia areata is a skin condition causing hair loss, and its exact cause is unknown, but it may involve biological mechanisms.
45 citations,
January 2010 in “International journal of trichology” Topical immunotherapy, especially with DPCP, is effective for treating severe alopecia areata.
100 citations,
July 2006 in “British Journal of Dermatology” 
182 citations,
October 2003 in “British Journal of Dermatology” The 2003 guidelines suggest that while some treatments can regrow hair in alopecia areata, none alter the disease's progression, and wigs may be the best option for extensive hair loss.
66 citations,
July 2003 in “International Journal of Dermatology” Betamethasone valerate foam is more effective and safe for treating mild-to-moderate alopecia areata than betamethasone dipropionate lotion.
180 citations,
January 2002 in “The journal of investigative dermatology/Journal of investigative dermatology” Vitamin D Receptor is crucial for normal skin and hair growth.
42 citations,
August 1999 in “The American journal of pathology” Basal cell carcinomas have much higher levels of Vitamin D3 receptors compared to healthy skin.
49 citations,
November 1992 in “Archives of dermatology” Different treatments for alopecia areata have varying success rates and side effects; intralesional steroids are most effective.
