Spectroscopy as a tool to evaluate hair damage and protection

Author(s)

Pavani, C. ^[1] ; Severino, D. ^[2] ; dos Santos, N. Villa ^[2] ; Chiarelli-Neto, O. ^[2] ; Baptista, M. S. ^[2]

Affiliation

^[1] Univ Nove Julho UNINOVE, Programa Posgrad Biofoton Aplicada Ciencias Saude, Sao Paulo - Brazil

^[2] Univ Sao Paulo, Inst Quim, Dept Bioquim, Sao Paulo - Brazil

• Document type: Journal article
• Source: International Journal of Cosmetic Science; v. 40, n. 6, p. 596-603, DEC 2018.
• Web of Science Citations: 0

Abstract

Objective Methods that can be used to analyse hair damage and to support a claim of hair protection are important for the cosmetic industry. There are many approaches available, but they are usually laborious and expensive. The researchers propose a simple fluorescence method that is based upon the emissive properties of damaged hair. Methods Hair fluorescence was observed when using both fluorimetry and microscopic procedures. The method was developed by comparing native hair with hair that was damaged by UVA and visible light. Results Spectroscopic properties (absorption and emission) of hair in the visible range are presented. The changes in the emissive properties of hair during irradiation were characterized and they were correlated with photobleaching, which is due to the generation of singlet oxygen. Emissions were also obtained in the hair shafts that had been previously treated with chamomile extract and this treatment was able to avoid hair bleaching. Conclusion The emissive properties of hair in the visible range can be used as a tool for the evaluation of hair damage and protection. This method can be useful as a tool in order to claim substantiation. (AU)

• FAPESP's process: 13/07937-8 - Redoxome - Redox Processes in Biomedicine
• Grantee: Ohara Augusto
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC