Not true. Synthetic brushes in a sense are "tougher" however due to their toughness they tend to curl at the tips rather than break off as natural hair will do. So in that sense they are not as good.
There are different degrees of quality in natural hair brushes with kolinsky brushes being on the upper end of quality.
That said both brushes can be used equally as well. You can get a synthetic brush or natural hair brush to last a good long time. A lot of this has to do with how well you treat your brushes. The less care you have the more likely you will damage your brushes.
Cheers,
-Mike
There are different degrees of quality in natural hair brushes with kolinsky brushes being on the upper end of quality.
That said both brushes can be used equally as well. You can get a synthetic brush or natural hair brush to last a good long time. A lot of this has to do with how well you treat your brushes. The less care you have the more likely you will damage your brushes.
Cheers,
-Mike