Teenagers are irresponsible, it’s a known fact.  They don’t really take anything all that seriously in most cases, though I’ve definitely seen teenagers that are the exception to that particular rule.  Some are very serious, very responsible, etc.  But in the case of acne treatments, there are some that can get past the teenager rule.  But most take some serious use and regular use in general, which takes a certain amount of dedication.  They can’t just wash their face, they have to apply this extra treatment every morning and every night, and frankly some adults don’t actually remember to do that on their own. 

But that being said, just because a teenager is not seeing results with an acne treatment does not mean it doesn’t work.  In some cases, it means that they are not actually using it as recommended and as they should be using it.  Now if there are side effects, that’s a different story, and if it still works despite some degree of irresponsibility, well…..  But in most cases, if you actually use a scrub or wash, it makes it a lot easier to remember.  Multi step programs can obviously get more complicated and so on.  But just don’t lose faith if your teenager is not seeing extreme results, it might be that they are not using it correctly as they should.