Compared to the other series that has the sponge inside, these brushes are a bit average. It's quite difficult to blend, I must say. I use the small flat one for eyebrows and it works fine, also for lips. The small diagonal one makes it difficult for me to work on shading and the large one applies foundation poorly. I think these two are suitable for liquid or creamy powder products. The fan brush, on the other hand, is...

The quality is impeccable, however these specific brushes are not for beginners, as their cut is not suitable for a simple everyday look. You should already be familiar with makeup in order to use them, otherwise they will seem useless to you.