A cosmetic factory was a place in 2015 where people would undergo heavy body alteration to remain youthful as they aged.

On the way to Hilldale, Officer Foley of the Hill Valley Police Department had believed Jennifer Parker to have spent a bundle at a cosmetic factory as her appearance did not match her age. It also allowed Foley to start wondering about her story and how she ended up in a place like Hilldale, but knew that her partner Reese would say it was just conjecture which had no place in police procedure.

Doc Brown similarly got an "all natural overhaul" from a rejuvenation clinic to add 30-40 years to his life sometime between his first trip to the future and when he decided to bring Marty to the future to "do something about his kids".


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