I don't wear make-up, jewelry, or dye my (horribly) gray hair.  I used to love make-up.  I even sold Avon for years and years. 
Over the past couple years we (as a family) have been drawing closer to God and I felt impressed to leave off as many vain practices as I could.  I only wear skirts now too (I wore a lot of skirts before and very simple make-up/jewelry).  My friends don't agree with me, but I don't judge them for their choices even though they are often judgmental of mine.
I also have very sensitive skin and once I stopped wearing makeup my skin got sooooo much better!  I put on a moisturizer with sunscreen in the morning and use a night moisturizer, but that is mostly it.  Mascara was the hardest thing to give up.