Another technical question

Aside from tried-and-true Manic Panic, is there any way to get fading red hair bright red again, but more permanently than Manic Panic, but without further lightening/bleaching the hair? While $10 seems like not so much for hairdye, I go through the stuff so quickly that it should be sold in vials in shady alleyways, not in tubs at Ricky's.