Willwork4truck
Spends too much time on here
It is normal, however using a petroleum or silicone based product versus a water based dressing will cause it to brown much faster, look worse

Is tire shine bad for tires?
Tire dressings - the compatibility with rubber The compatibility of tire shine with rubber is a que...

Dangerous silicones
"Any tire shine that is based on silicones can be bad for your tires if you are not able to wash it off easily. If you do not focus on getting the dressing off your tires before going in for a new application, you will indeed be causing harm to your tires. Looking into the aspect of the silicones itself, there is one type of silicone that is soluble in water. This has none of the problems that are usually reported from a tire shine product, which would be a product based on a silicone that is not soluble in water. This latter type of silicone is suspended in a solvent in which case the type of solvent is what determines any harmful action on your tires.
If this solvent is going to evaporate, it could cause a problem to the tire as it could lead to drying. However, when there is no evaporation, you get the best out of the silicone. This is possible with the right type of silicone compound and a company that knows what it is doing will be getting it exactly right so that there is no negative impact whatsoever on the tires. When you have the right product, there can be no problem. Unless of course, you mess up the application part."
Obviously some products are better designed/formulated than others. Here's a "2020 best shines" list. Who knows if its all sponsored products or what...

Best Tire Shines: Make Your Car Showroom Ready
Searching for the best tire shine for your car? Read our ultimate review to the most popular brands this year to keep your tires in top shape.
