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Green tea extracts for hair protection

According to a new study funded by P&G and published in the Journal of Cosmetic Dermatology, Camellia sinensis (green tea) extracts can be used as treatments for hair protection. This efficacy is linked to extract concentrations of catechins.

In ‘Protection of hair from damage induced by ultraviolet irradiation using tea (Camellia sinensis) extracts’, researchers describe how they tested the power of this botanical antioxidant to prevent changes in hair protein composition and colour changes resulting from breakdown of yellow-coloured kynurenines.

Extracts were analysed by LC-MS to identify the key composition chemistries. Oxygen radical antioxidant capacity (ORAC) was used to measure the ability of the extract to react with a peroxyl radical via a hydrogen abstraction mechanism. Hair protein structural damage was measured by quantifying a biomarker peptide specific to UV-induced damage, while hair colour changes were measured with a spectrophotometer.

It was found that levels of key phytochemistry in the extracts, specifically the catechins, correlated with the prevention of UV-induced protein damage of colour changes due to kynurenine breakdown. Extracts with higher phytochemical levels also had higher ORAC scores, indicating that they were more effective antioxidants.

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Upcoming Events

Testing of Personal Care Formulations

Burlington House, London
Thursday 17th March 2022

in-cosmetics Global 2022 - Paris

1 Pl. de la Porte de Versailles, Paris
5 - 7 April 2022

NYSCC Suppliers' Day 2022

Javits Center, New York
3 - 4 May 2022

in-cosmetics Korea 2022

Hall C, Coex, Seoul, South Korea
13 - 15 July 2022

PCHi China 2022

Shanghai World Expo Exhibition & Convention Center
18 - 20 July 2022

32nd IFSCC Congress

Park Plaza Hotel, Westminster
19-22 September 2022

Access the latest issue of Personal Care Magazine on your mobile device together with an archive of back issues.

Download the FREE Personal Care Magazine app from your device's App store

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