Alopigaid

Alopigaid is a hair preventative treatment.
Since the invention of alopigaid, hair growth can be stopped so most people get a haircut, take the drug and then their hair stays as it is, with only an occasional inverter application to keep head hair from thinning. De-thinning appointments have taken the place of haircuts, essentially ruining what convenience apoligaid might have had.
Body hair can be removed painlessly and permanently so purely for convenience and style, the prevailing trend in across the globe is toward hairlessness, with the word “beard” being unknown to most people and individuals with facial or body hair being considered primitive or impoverished, or even crude. They’ve nearly adopted the ancient Egyptian concept that hair is a form of excrement, and a fully bald head for men and women is not an uncommon fashion.
This all has numerous negative effects including a near universal aversion to cold weather, common skin irritation from abrasion, and (in conjunction with the treatments to keep skin translucent and untanned) prone to melanoma. Trichotillomania is also 300% more common than it is in 2015.
So essentially, the world looks like a bunch of oddly sickly people with shiny translucent skin who never wear makeup and tend to have thin hair most of the time. Major exceptions in the books include Dr. Niide, who has a red beard, Sasha who has a Russian Orthodox standard beard, and Mehmet Aga, who is fully body haired and ghastly to Violet in both appearance and mentality.
People still look human enough and wouldn’t be disturbing looking to 2015 people by any means, but if you spoke to them for a while they’d seem oddly alien, like they’d somehow faded slightly from existence.