Patent ID: 7820148

Claim:
A complex nutrient base in aqueous medium, said complex nutrient base comprising between 0.01 and 1 weight percent of a Milk Peptide Complex, at least one type I 5alpha-reductase enzyme inhibitor and a sufficient total weight concentration of sulfur-bearing amino acids(s) to support an increase in the synthesis of keratins of the hair and/or scalp pilary stem; and containing less than 0.5 weight percent of an amino acid fraction, less than 0.2 weight percent of a water-soluble vitamin fraction, and less than 5 weight percent of an inorganic fraction including trace elements and metal salts; and excluding any untraced cell growth factor and any biological extract of animal or cellular origin having an indeterminate composition, and wherein the complex nutrient base in aqueous medium permits viable in vitro culture of human epidermal keratinocytes for at least one clonal proliferation on first passage.