Do Pbt Keycaps Yellow?

PBT (short for "polybutylene terephthalate") is one of the hardest, most durable materials for keycaps. ... PBT does not turn yellow from exposure to ultraviolet light, like ABS does.

Do PBT keycaps wear out?

5 years of use, and the PBT keys held up really really well (imo). Personally, there has been no sign of wear on my PBT caps (been about half a year since I've had them), while my Leopold caps were shiny in about the same time.

Do white keyboards turn yellow?

Re: White keyboard turning yellow over time? Depends on how much UV exposure the board gets and what materials it's made of I think. Most newer white boards shouldn't discolour much over time.