a method of analyzing the effect of an aggression on hair, comprising the steps of: (i) collecting image data for at least one hair surface, (ii) applying at least one aggression to at least one hair surface, (iii ) collecting image data for at least one hair surface from step (ii), (iv) converting the image data collected in steps (i) and (iii) into a format for creating enlarged images from a 3d printer (v) produce enlarged 3d models of at least one hair surface from a 3d printer using the data from step (iv), (vi) compare the 3d model from step (iii) to the 3d model from step (i )； and (vii) evaluate the degree of hair damage. A method for determining the effect of a beneficial treatment or regimen on hair, comprising the steps of: (i) collecting image data for at least one hair surface, (ii) converting the image data of the step (i) in a format for creating enlarged images from a 3d printer, (iii) producing enlarged 3d model (s) of at least one hair surface from a 3d printer using the data from step (ii) ), (iv) analyze the surface properties of apparent hair from the 3d model (s), (v) assess the degree of hair damage, (vi) apply an appropriate beneficial treatment or regimen to the hair, leading to taking into account the findings of steps (iv) and / or (v), (vii) collecting image data for at least one hair surface from step (vi) and producing an enlarged 3d model of the treated hair surface using the (viii) compare the 3d model from step (vii) with the 3d model from step (iii), and (ix) evaluate the beneficial effect for hair.um método de analisar o efeito de uma agressão ao cabelo, compreendendo as etapas de: (i) recolher dados de imagens para pelo menos uma superfície do cabelo, (ii) aplicar pelo menos uma agressão a pelo menos uma superfície do cabelo, (iii) recolher dados de imagens para pelo menos uma superfície do cabelo proveniente da etapa (ii), (iv) converter os dados de imagem coletados nas etapas (i) e (iii) em um formato para criar imagens ampliada
