I LOVE Sephora.  It's kind of overwhelming though!
 
I purchased Kinerase Intensive Eye Cream after trying a sample.  It is $59 (yikes!!) but this stuff works.  I had a milia under my eye and after using the sample for 2 days it was GONE.  I think it's important to know when to splurge and when to save.  And I think this is an area it's okay to splurge in! 
I have never tried DiorShow mascara but have tried pretty much every other high-end mascara out there and ALWAYS go back to my L'oreal Waterproof Voluminous.  It stays and holds a curl all day, other formulas make my lashes go limp. 
I also purchased Anastasia brow powder and brush and I really like this.  The color isn't too dark and it just gives a nice polished look. 
I am getting married and was on a mad hunt for foundation that didn't contain Titanium Dioxide (washes out in photography).  I purchased and returned Laura Mercier's foundation.  It just did not cover very well throughout the day.  I went to a MAC counter instead and tried Studio Fix, which I really like so far. 
Another great product is the Urban Decay Primer Potion.  It is an eyeshadow base that makes it last all day, prevents creasing, etc.  I have tried other brands and this has been the best so far.  The only thing I don't like is the packaging.  It's pretty but difficult to get the product out.   
I am a makeup fanatic!!!  
 
  
 