In the vast majority of epoxy systems the process results in yellowing. The duration of yellowing and the amount of yellowing vary according to the preferred epoxy type. Resinin Slim Extra, Resinin Slim Vis, Resinin Slim Super and Resinin Mass are among the best resins produced in this direction.
The main factor that causes yellowing is sunlight, but the sun is not the only reason for yellowing. The waiting time of the epoxy in the packaging, the heat that occurs during its curing, the physical and chemical effects that occur in the environment where the cured epoxy is located are also the side factors of yellowing. Unfortunately, the fact that there are many determinative effects prevents to establish a clear expression in this period.
In order for the epoxy to remain transparent for a long time, you should first choose epoxy types resistant to yellowing. Then, you should protect your product from direct sunlight, limit chemical effects and not expose it to high temperatures.