SAN FRANCISCO -- More obvious than a sore thumb, an off-color tooth can mar the brightest smile. Yet whitening just one tooth -- without affecting its comrades -- presents so many challenges that ...

Tooth discoloration is classified into three main types: extrinsic (surface), intrinsic (internal), and internalized (stains that have penetrated the tooth). Common causes include diet (coffee, tea), ...

Hair bleaching is one of the most popular trends in contemporary haircare. Whether you're looking to go blond, color your hair bright, or simply add some highlights, lightening your locks will require ...