Under-eye rings are the bane of my life! Unfortunately no matter how much water or sleep I get, they're hereditary so are here to stay :( I've heard that you get much better concealer application when using a brush (compared to the soft pad of your ring finer - no rubbing, gentle patting!) and this is exactly what I found.

The head of the brush was bigger than expected but the soft bristles gave excellent coverage in a few strokes. It really made applying the concealer a lot more fun - I felt like an artist creating a masterpiece! Well, kinda. Brushes are an investment and this is one of the essentials.