Měifàshī jiànyì wǒ bǎ tóufa rǎnchéng qiǎn yìdiǎn de yánsè.
The hairdresser suggested I dye my hair a slightly lighter colour.
Tips
usage
美发 is hairdressing (美 "to beautify" + 发 "hair"), and a hair salon is a 美发店. 美发师 is the standard job title; 理发师 is the older, plainer word for a barber.
