Chemical peels: Celebrities swear by them as the answer to dull and lifeless skin. Zara Kassam explains what’s involved and why they aren’t for the faint hearted. There’s no doubt about it, an accumulation of dead cells in your skin is going to leave it looking less than glowing, but a spotless, flawless complexion is lying just beneath the surface. So how do you access this inner you? The answer, proponents say is what’s known as a chemical peel, skin peel or lunchtime peel. There are many different types of chemicals used in skin peels that target different skin concerns from…