If you’re trying to lose weight, before-and-after photos can be crazy-inspiring. But unfortunately, some companies pushing weight-loss products create fake before-and-after shots to increase sales—and it’s surprisingly easy to forge these photos. Just check out this video, courtesy of BuzzFeed/YouTube.com, that shows it can be as simple as finding the best angle and lighting for your next selfie: MORE: 7 Lazy Ways to Lose More Weight MORE: 9 Diet Changes Real Women Made to Lose More Than 50 Pounds Think about that next time a program or a product tries to entice you with an impressive before-and-after. After all, some weight-loss companies aren’t above making false promises about their products—just check out how this blogger’s legitimate weight loss photos were stolen to promote a diet pill under false pretenses. When in doubt, use these seven ways to tell if a weight-loss product is too good to be true. If it is, chances are, so is the before-and-after. This article originally ran on Womenshealth.com. MORE: 5 Habits People Who Successfully Lose Weight Have in Common