Anti-aging creams are filled with lies
You know what's free? Getting older. You know what's expensive? Trying to fight time. Consumer Reports has found that anti-aging creams largely don't work. You're paying all that money to soothe your soul more than your actual skin.
This is also true when it comes to expensive sunscreens -- it turns out that the more expensive ones don't work any better. (The highest-rated sunscreen was Target's up & up Sport.) In fact, if you buy a sunscreen that costs less, you might actually use it more. Which is definitely healthier.
Fitness trackers are pointless accessories
If you really need to know how many steps you take in a day and get those alerts emailed to your wrist, then a fitness tracker is a fine investment. But if you think it's actually making you healthier, then you need to reevaluate.
The academic universe is having a hard time keeping up with all the new fitness gadgets and their many (many) features, but these trackers have very little impact on your overall health.
Mostly, it's a motivation question. Many people see a jump in activity at first, when they become newly fascinated with increasing their arbitrary numbers, but motivation quickly disappears when it's not connected to a real-world incentive. The biggest impact seems to come when a fitness tracker is used as part of a larger incentive program -- like an employer-backed monetary award or insurance discount connected to activity levels.