Well, skincare is my specialty! After several years of changing routines and numerous visits to dermatologists etc, wasting hundreds of £.
After trying everying you can think of from rich vitamin E products, to dermabrasion I concluded that less, really is more.
The problem with most of the brands you mentioned (chanel, la prairie and yves saint laurent), is... well... they're crap. They're fashion companies, not skin care specialists, more money is spent on packaging and marketing these products than on developing them. Just read the label, the things in there are insane, several types of colourants, perfume, stabalisers, fats... you name it.
At a young age there is no need for excessive products, simply clensing is enough. I found that the best product bar far is Dove extra sensetive Soap with warm water... Thats it! Nothing else!
Aside from that, keeping a good diet and drinking water, taking a multi vitamin tablet and 1 tab of Vitamin E 600ui before bed every night, is all you need through your teen years. When you get older products may be more bennificial, but they won't stimulate anything good to happen in your skin that isn't already happening at your age.
Once you pass the barrier of 17-18+ years old things may go a little differently, some people need a helping hand other people just have flawless skin naturally.
As for fake tan, thats not really a skincare product, more a beuty product. Personally I think St Tropez is pretty good, but everyone has their own favourites.
. I really just need a skincare routine that i can stick to. Any help at all would be great guys. Thanks. 
I agree with what Meg says it does make sense.
I hate whem my nose or something goes shiny 
