(EN) The invention relates to a method for establishing a user-specific hair care treatment by determining and taking into account the degree of damage to the hair. Initially, with the help of near infrared and/or infrared spectra of the keratin fibres of an individual, the content of an oxidation product of an amino acid is determined and a degree of damage is deduced by means of a calibration model.Based on the determined degree of damage, an individual is given treatment recommendations.
(ZH) 本发明涉及通过确定和考虑毛发的受损程度来建立用户特定的护发处理的方法。首先,借助于个体的角蛋白纤维的近红外光谱和/或红外光谱,确定氨基酸氧化产物含量,并且经由校准模型推断出受损程度。基于所确定的受损程度,向个体推荐处理建议。