In the good news, a bathtub that needed a change because no matter how much you cleaned it, it looked dirty, becomes like new. So, let's start with the fact that the product does what it promises. I reserve judgment on durability as I haven't used it yet.
The bad news is that this change is not an easy task at all. Especially the primer has a smell that even with a double mask burns your nostrils. Applying the enamel is not easy with the roller as it becomes streaky, the material starts to dry quickly so you have to work fast, there are runs in the program as it is particularly fluid and you have to check carefully. So, I did the interior with a roller and for the final finish on the top part, I used a brush and it became completely smooth.
As for the quantity, it is supposed to be for 2 hands for a bathtub-sink, but it all went into the bathtub and soap dish. This is because it definitely needed a third hand. Colleagues who have already painted white bathtubs may not have had such an issue, but for me, who had a beige one initially, it seemed like it needed a third hand. So, if you are going to do more than one bathtub, it is better to use 2 hands of primer instead of 1 and then apply the enamel with 2 hands. Otherwise, the quantity is okay for 3 hands in one bathtub.
In the first 2 photos, the before, and in the last 2, the after.
Overall, satisfied but I would never do it again in a house where I live. I was stressed with this whole process, cleaning the tools was a hassle, and the solvent was not enough. The smell is a bigger problem than it sounds, but I suppose such a job cannot be done with "ecology".
As a tip, find a transparent bowl that can hold the roller and mark it externally every 50ml with a marker to facilitate mixing the liquids. For a typical-sized bathtub, you need a maximum of 200ml of final quantity for priming and a maximum of 250ml total volume for each hand of enamel.
Good luck.
