John U posted a picture of an applicator sponge that I had many many years ago. Forgot about those. Just ordered some off Amazon. These should get the job done right
Have look at these small cosmetic brushes. Mine are from Maxshine, but they are clearly re-purposed cosmetic brushes, which you can find by Google searching "application brush" or "soft cosmetic brush".
Have look at these small cosmetic brushes. Mine are from Maxshine, but they are clearly re-purposed cosmetic brushes, which you can find by Google searching "application brush" or "soft cosmetic brush".
I have been using Onyx for years and love it, but it's not at home on those tires. That's doesn't mean it's a bad product, its excellent in fact, rather the difficulty in finding something that works with PS4S's.
I'm also probably not a good gauge of durability because I don't daily drive the "good" cars, nor do I drive them in the rain. For Onyx on a daily, it would last about two weeks without much rain.
I have found Carpro Perl or OG Tire Dressing (I know, I know) to work best on PS4S's.