Retr0bright noun 1verb 1forms 3 noun1 •A chemical mixture, mainly hydrogen peroxide, used to remove yellowing from ABS plastic computer and electronics cases.Keep me busy this weekend! In between blowing power supplies and running all my cases through a bath of retr0bright! Hah! — 2009 verb1 •To remove yellowing from ABS plastic computer or electronics cases via this method.These are four different machines I've been restoring over time (cleaning, retrobrighting all the cases, new capacitors on cards and motherboards […] — 2009 formsRetr0brighted · Retr0brighting · Retr0brights