Have you ever smiled into the mirror and noticed your teeth were a little too reminiscent of that cup of coffee you enjoy each morning? Teeth-whitening solutions range from expensive high-tech treatments, to commercially available strips and gels, to a vast number of cheap DIY suggestions posted on social media sites like Facebook and Pinterest. While some of these low-cost whitening methods may work, others may be ineffective or actually do more harm than good. [More]
