Many minor cosmetic enhancements exist in 2085. Things like hair dye and tattooing have been completely streamlined and enhanced. For example, you no longer have to go to a hair salon and sit through long hours of bleaching- a more convenient (but expensive) option is to get the color you want simply installed via a tiny microscopic chip at the base of your neck. 

You can imagine how complex this technology may seem, but advancements in DNA editing created a whole plethora of ways of subtly altering your physical body via manmade intervention. At first this started out with the scientific community slowly identifying new ways to combat rare genetic diseases like sickle cell; eventually developing various cures to cancer, which obviously caused a societal uproar. Governments particularly wanted this technology heavily monitored and controlled, but most scientists believed in the free transfer and sharing of any discoveries made and vouched for complete transparency when it came to saving real human lives. This was the ideal outcome, but one that sadly never came to fruition. The federal government seized as much DNA editing research as they possibly could and defunded science organizations until they were scrambling to fund themselves. Many were forced to either disband or sell off parts of their research in order to keep afloat. All the while, the federal government continued to develop the stolen research in private until they came out with a completely commercialized version of what once was something that could revolutionize the entire human lifespan. Those miracle cures to cancer and DNA editing sequences that targeted rare and painful diseases were put on the backburner in order to roll out something that could bring them in ludicrous amounts of money- basically, modern plastic surgery.

Now, people could come in for an appointment and simply install whatever kind of body modification they desired. There were limits, but anyone could change their eye color, hair color, skin markings… if the DNA sequence was something simple enough for the technology to edit, it could be altered. This is done through something called CRISPR-Cas9, which actually exists in real life. CRISPR-Cas9 is created through utilizing the natural defense that bacteria have against viruses. The bacteria take certain parts of the virus and incorporate it directly into their own DNA sequences in order to use its own systems against it, in turn effectively keeping the bacteria safe from any future infection. Using this basic structure, humans can take certain parts of their own genome (a segment that contributes to eye color, for example) and clone it in order to adapt and change it to their liking. 

All of this is then forced onto a tiny chip and inserted almost painlessly into the base of the neck, which is currently the most common location of installation. But just like vaccines, this kind of body intrusion caused all kinds of political arguments and many people still refuse to get any sort of body modification done this way because of this. All kinds of theories about the government using the chips as a way of mind control and subtle societal manipulation are out there- and with the constant distrust the government faces right now, something like that doesn’t seem too implausible. Scientists aren’t too fond of the technology either, even if they admit the idea is revolutionary.