My tongue is always white, what are the causes and cure?

Tongue Film. That white will go away if you brush your tongue or use a tongue scraper. Everyone's oral chemistry varies. Be sure you do not start having pain/stinging symptoms. It could be a bacterial/viral infection requiring lab testing..
More information . The duration is needed. If you are a tobacco user, then see an oral surgeon , dentist, or md ;asap to rule out cancer. Diet and hygiene are major factors in white tongues . Is the white on the entire tongue or specific areas? Dry mouth from medication or some diseases can cause white tongue.