The invention relates to a hair restorer preparation or food supplement (100, 100a-100c) for oral administration, comprising L-cysteine and zinc, the hair restorer preparation or food supplement (100, 100a-100c) comprising copper, calcium, magnesium, silicon and cholecalciferol. The dosage regimen of the substances or the substance compositions (S-Z) constituting the hair restorer preparation or food supplement (100, 100a-100c) can be adapted to the individual organic nutrient-supply requirements of a customer (200, 200a-200d), which requirements are determined by means of tests and/or measurements and/or questionnaire evaluations (A-H).