Synopsis
MOLECULAR WEIGHT has been thought to be an important feature of COSMETIC GRADE PROTEINS
and to be a critical factor affecting PROTEIN SUBSTANTIVITY to HAIR. The study reported in this
paper was undertaken to show the relationship of molecular weight to protein substantivity. Using gel filtra-
tion and ultracentrifugation data were obtained that indicate peptides in the range of molecular weight 1000
are more substantive than the very high molecular weight molecules.