India, Jan. 30 -- Thinking about giving your hair a new life with a colour job? While it does make your hair look oh-so-stunning, a bad approach to dyeing your hair can cause real damage.

We spoke to Javed Khan, Creative Colour Expert at Sinh Salon, Gurugram, to ask him all about the most important questions to know when considering colouring your hair. From pre to post-colour cair to making an informed decision about going for the change, here's all you need to know.

Before any colour or lightening service, a thorough hair and scalp diagnosis is essential. This typically includes an elasticity test to assess how well the hair stretches and rebounds without snapping, which indicates internal strength. A porosity assessment helps determi...