The paint itself is unbeatable.
Have now tried it on 3 different nail polish: it can be applied very easily, the consistency is great and it works flawlessly. Within seconds, the nail is dull and dry. For durability: 5 - 7 days, which also really is but a long time and since then are already including the paint on. The top coat is dull, no matter what you do with it.
All in all, a strong buy recommendation.
The price is unbeatable for the quality of the product and in particular the amount contained.