Tryptophan in Human Hair: Correlation with Pigmentation

    August 2000 in “ ˜Il œFarmaco
    Antonella Bertazzo, Monica Biasiolo, Carlo Costa, Edda Cardin de Stefani, Graziella Allegri
    Studysummary This study observed that tryptophan levels in human hair are higher in males than females, increase with age, and vary with hair color, being highest in grey and white hair.
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