Christophe Robin Temporary Colour Gel While this product may often be used to cover up greys, the Christophe Robin Temporary Colour Gel ($35) simply offers Golden Blonde or Dark Blonde colours that can be targeted or applied all over for a subtle shade adjustment. It lasts up to seven shampoos and there's no mixing (or even semi-permanent colour) involved with this temporary gel if you're nervous or a first-timer. Image Source: sephora.com Christophe Robin Temporary Colour Gel $35 from sephora.com Buy Now