Neglect moisturising: A wrinkly decolletage can really age you. The bust is an area we often neglect as we focus on our face. But breast are exposed to friction from clothes and underwear which can end up chaffing the delicate skin. It is worth investing in products to help combat that. Any cream that has almond oil, cocoa butter or evening primrose oil will help keep the bust area soft. Skin on the neck and chest gets almost as much sun as the face and, being much thinner than skin elsewhere, it is more prone to showing the tell-tale signs of ageing. So, use a sunscreen that's suitable to your skin.