600777 Disclosed is a formulation comprising: a phytosterol (as a 5-alpha reductase production inhibitor, such as an extract from Serenoa repens (saw palmetto) or Pygeum africanum / Prunus africana (Iron wood / Stinkwood / African Plum / African Prune / African Cherry)) methylsuIfonyImethane (dimethyl sulfone) an extract from Polygonum multiflorum (Chinese knotweed) an extract from Gingko biloba an extract from Equisetum arvense (field horsetail) an extract from Panax quinquefoIium (American ginseng) a soy isoflavone L-arginine vitamin B3 (niacin) vitamin B5 (pantothenic acid) vitamin B6 (pyridoxine hydrochloride) biotin (Vitamin H) vitamin B8 (inositol) vitamin E zinc and colostrum. Further disclosed is the use of the formulation as defined above in the manufacture of a medicament for treating hair loss or hair thinning, or improving hair growth in an individual, such as wherein the individual suffers from alopecia, baldness and/or partial baldness.