Not for the fair-skinned or faint-hearted, this week Xen Tan launches Dark Lotion Absolute (£34.99). The latest from Xen, the Louis Vuitton of the self-tan world, this dark lotion promises to hydrate and smooth the skin while giving a richer, darker tan than ever before. Our advice: use sparingly. (www.xen-tan.co.uk) KD