What do most people believe that is actually a myth created by corporate companys?

1. You lose your warranty if you break the tamper seal (ie. “Warranty void of seal is broken” stickers). “... warranty conditions that forbid consumers from opening or repairing their devices are illegal under a provision of the 1975 Magnuson-Moss Warranty Act” https://motherboard.vice.com/en_us/article/gv5ddm/warranty-void-if-removed-stickers-are-illegal https://www.ftc.gov/news-events/press-releases/2018/04/ftc-staff-warns-companies-it-illegal-condition-warranty-coverage https://www.law.cornell.edu/cfr/text/16/700.10
   — impressiver


2. “Buy our split end repairing shampoo and conditioner! It’ll get all of those pesky split ends!!!” Once the end is split it’s split. How is a shampoo supposed bring the ends back together? The only way to get rid of split ends is to cut your hair.
   — forgofamily


3. We actually don’t need a lot of toothpaste on the brush, but companies advertise using a whole bunch in commercials to make you run out faster.
   — eroder11






4. That the ink cartridge is actually empty.
   — ImOverThereNow


5. That Vitamin Water is actually healthy for you. 120 Calories, most of that sugar.
   — JayTrim


6. Here in Sweden there is an extremely persistent myth that you *should* eat 6-8 slices of bread every day. That was a commercial campaign by a bread manufacturer. Some way they managed to get the Public Health Institute to pass that myth on. It was like 50 years ago, and that myth still lives! I'm so sick and tired of that myth.
   — JRL1981






7. That it's in YOUR best interest to keep your rate of pay a secret, when in fact it's exactly the opposite. If it's taboo to talk about how two employees doing exactly the same job can be paid wildly different wages.
   — warrantyvoiderer


8. “We’ll stand by our warranty” —Circuit City one week before they closed.
   — kilogears