Demi Lovato claimed anti-wrinkle injections make her confident. The 31-year-old singer is the new spokesperson for Xeomin and she’s explained the regular jabs – which are used to improve the look of frown lines – make her feel good about her appearance without dramatically changing the way she looks. She told People magazine: “I’ve always believed in making choices that are empowering, [keep you] true to yourself and help you look and feel your best. “I’ve incorporated Xeomin into my routine every three months, and it gives me the results I want while still looking like myself. “There are time…