dpHue Hair Lightening Blonding Brush x Kristin Cavallari This new dpHue Hair Lightening Blonding Brush x Kristin Cavallari ($28) gradually brings sun-kissed highlights to light-coloured hair, no actual sun needed. It can be activated with just a hair dryer indoors, and there's a purple pigment already inside to counteract any possible brassiness. Image Source: sephora.com dpHue Hair Lightening Blonding Brush x Kristin Cavallari $28 from sephora.com Buy Now