Not all hair will keep that point after it has been used a few times. This is one characteristic that separates good brushes from the rest. It is very important for quality brushes to be cared for properly. After painting with a brush, be sure to rinse it thoroughly with clean water. Then use a mild soap to make sure all of the pigment is washed from the ferrule.
Some people even use conditioner to ensure the longevity of their brush.
It is said that the beauty of watercolor can only really be achieved on good quality paper. Without quality paint, the colors will not be vibrant and pleasing to look at but even the best paint can be absorbed, dulled or eventually become discolored on inferior paper. A good quality watercolor paper is one that is made out of cotton rag or high alpha cellouse. To see more about papers see the Teck Talk . Watercolor paper typically comes in three different surfaces.