Best product to use for prep cleaning vinyl dash pad before painting?

[TKCR]

I actually did the entire interior. But the dash was the most time consuming. I wouldn’t want to have to do it again, lol. When I took that last photo in early spring, it was after I installed a new dash molding, so I had to take the dash out. There was only one little place on the very edge of the dash, on the passenger side, that the dye rubbed off when I took it out. I touched it up before reinstalling, but it wasn’t even in a visual area. It was below the A-pillar trim, along the frame.