Retrobrighting/Deyellowing - A New Way? Is it True? Part 2

Is there a much simpler way to deyellow old plastics? I'm gonna find out.

Part 1 can be found here: https://youtu.be/VDebjIepV6o
Part 3 can be found here: https://youtu.be/oc8e_q-xcuw
Part 4 can be found here: https://youtu.be/uja8kxSPxs0
Here's the inspiration video: https://youtu.be/8P1OVj0IcqY

Видео Retrobrighting/Deyellowing - A New Way? Is it True? Part 2 канала Rebel Scum