Preparation and evaluation of semi-permanent hair dyes liposome

Abstract

This study used phospholipids from fresh egg yolks to prepare liposome-encapsulated semi-permanent hair dyes in different pH buffer solutions and evaluated the functions and colour fastness to washing of the dyes. The extraction ratio of egg yolk phospholipids was 5%, and the purity was 91.8%. Empty liposome solutions were then prepared using high-speed homogenizer with particle size 219–848 nm. After being stored at 4°C for 28 days, the average particle size of the liposome-encapsulated dye formulas increased from 1.36–1.92 µm to 1.99–2.38 µm. The ΔE colour difference values of the five hair extension sets dyed with the control group and hair dyes on the market were of the range 6.56–13.39 after eight times of washing, whereas the ΔE values of the four hair extension sets dyed with the liposome-encapsulated dyes were of the range 3.56–5.21 after eight times of washing. The liposome-encapsulated dye at pH 3 showed the best result.