It’s awards season in Hollywood, and we’ve spent countless hours clicking through red carpet photos, coveting the haute couture looks worn by our favorite starlets. We’ve noticed that from the Golden Globes to the Oscars, every exquisite outfit has one accessory in common: dazzling white teeth. In fact, pearly whites just might be Hollywood’s favorite accessory. They’re more frequent on the red carpet than choker necklaces and designer bags.

So, just how far do celebrities go to get stain-free teeth? And how can you get the same result at home without spending a fortune? We did an insanely detailed investigation and discovered celebrities favorite teeth whitening strategies from the predictable (like sipping all your drinks through a straw) to the straight up weird, to the must-try. Here’s what we found.