I have tested Lancôme's Idôle Curl Goddess Mascara. Both the packaging and the design of the mascara itself immediately give an impression of luxury.
The applicator's brush shape makes it easy to apply along the entire lash line, and the formula delivers on its promise - the lashes do not clump together, both on the upper and lower lashes. However, there is a small clump of mascara at the very end of the brush. The mascara gives long lashes after a few layers of application and also gives the lashes a nice curled shape. It lasts all day even during workouts.
The design of the mascara is also grip-friendly, feels good in the hand. The downside is the high price, but you get what you pay for.
I am participating in Smartson's test panel and have received a free test product.