First of all, I am happy to discuss this. In fact I think this is an issue that needs to be discussed as there are no clear guidelines for restoring materials like hard rubber. You are of course welcome to your opinion and while I think it is incorrect it is your opinion. Trying to say things about my character are truly not necessary.
At any rate. Rubber begins to deteriorate from day one of production. This is an on-going process that for the moment at least can not be stopped. There are a number of things that cause rubber to oxidize. UV light, high humidity, high temperature, oxygen and as well as certain gases such as ozone.
UV light is certainly one of the factors that can cause rubber lighten over time.
However, it is the chemical reaction that the off-gassing sulfur as well as the other things like fillers has
with moisture that create the thin layer on the surface that we see. These combined factors will discolor the surface grayish green to brown and cause the material to break down quickly.
So, technically, you are right. This product is removing that build-up on the surface which was sulfur that was in the hard rubber. That being said, it is not necessarily removing surface material. Underneath this layer the rubber is often black. Also, this surface oxidation for the most part does not run extremely deep. When I created my products I wanted to be sure that the hard rubber was not being chemically attacked. Oxyclean as well as Beach are very indiscriminate as they will not only remove the oxidation but will also start to harm the healthy rubber underneath. Often the oxidation will also re-harden and sanding is required. My product is only removing the surface oxidation. Recently, I have added a product to remove slightly deeper oxidation as well but I am very careful to not cause deep surface damage. I also use enzymes to break the oxidation down. These enzymes are not destructive like so of their chemical counter-parts. Once this is finished often very little polishing is needed. Even the polishes I make are made to break down very quickly so as to not remove to much material. I also make sure that all the products contain anti-oxidants that protect the material.
The whole reason I got into this was not to make money but to come up with something that was actually made for restoring hard rubber and not something that was used because that is what they had at the hardware store. I am also trying to use safe ingredients only. Bleach as well as things like Semi-chrome and Flitz are not made for for that. They use strong abrasives and chemicals that are quite toxic.In fact because I used the Semi-Chrome so much I started to have breathing issues.
Also, believe me, I am not getting rich doing this. I am sure you make a lot more money then I do.....at least I hope you do. While I enjoy doing this there is also a lot of time and effort that goes into it.
I am happy to continue this conversation if you have anything else to discuss. If you have better methods for restoring please do share them. I am happy to give you my opinion as well.
Sincerely,
Mark Hoover