They are not as long wearing as other formulas. Cream formulations are more opaque, so you need to be more selective about choosing a color. Shimmer lipsticks are very long wearing, but are not everyone's cup of tea. Unlike shimmery eyeshadow or blush, a shimmer lipstick can be flattering at any age. Their light reflecting quality has the added bonus of making the lips look fuller.
Shimmer formulas look terrible on dry, chapped lips.
Matte lipsticks are the longest wearing formulas. They are a good choice if you are trying to make a bold statement with your lip color. Matte formulas are extremely drying, so should not be worn by anyone with dry, chapped lips. Your lips are the one area of your face where you can really play with color. If you are super fair, a little color goes a long way.