Just like a lot of other things in life, the answer to this question is unfortunately not black and white. The short answer is yes, hydro dipping is a permanent process, but there are a few factors that can influence how long it lasts. One thing to keep in mind is that the quality of the finished product depends on a number of different factors, including the type of material you're using, the skill of the person doing the dipping, and the care that's taken in post-dipping care. In general, though, hydro dipping is a very durable finish that can last for many years with proper care. If you're looking for a long-lasting finish for your project, hydro dipping is definitely a process worth considering. Just be sure to factor in all the variables that can affect its longevity, and you should be good to go!