Nah I use regular Armorall for the dash, but considering that Vinylex is for all plastic, rubber, and vinyl I guess you could use it on the dash if you wanted to.
An important thing to remember about Armorall is that when you start using it you can never stop. Let me explain why. Plastics use plasticizers to remain flexible and supple. The inventor of Armorall thought it was a great idea to sell them in a bottle. An old plastic would have the plasticizers leeched out or dried up, making it an ideal candidate. Armorall really does permeate the plastic and make it supple. In the process of doing so it displaces the original plasticizer, which was developed to be a long term solution.
If you stop using Armorall it will leech out at a faster rate than the original one would. It should not be applied to a new car. However cars that have sustained damage can be renewed by Armorall. Continued use is the only way to preserve the suppleness of the plastic. Armorall is also capable of softening certain plastics that were meant to be rigid.
To be fair not all plastics are the same. Armorall does not have the same effect on all types of plastic. But those plastics typically used for seats and dashes that are intended to be flexible, are the most affected.
Personally I just damp rag the dash for the first few years. But I park in a garage, and use a sunshade. If you do not, then something with a UV blocker may be a better solution.
Armorall is a fantastic product when used appropriately.
