Revlon Colorsilk Medium Brown 41. Revlon ColorSilke? with Revlon 3D Colour Technologye? for long lasting, natural looking, multi-dimensional colour. To ensure your purchase satisfaction, hair colourants at HORO are only available in stores. Please visit our stores for the full range. Click here to find your nearest store. Leaves hair in better conditionAmmonia-freeWith UV defence100% Grey coveragePermanent colour