I've been shaving my upper lip for years. I'm 21, and over time it has started to look darker. What can I do? (Photo)

This is genetic and often difficult to treat.  Fraxel DUAL , Clear + brillaint, viva help but often peels and skin care are needed to prevent this from getting darker.  this is from rubbing and genetics.  Best, Dr. Emer

I suggest seeing a cosmetic dermatologist for wound care and potentially a steroid to decrease the swelling/redness more rapidly.  Some people use too much of the product or get irritated and this can be reversed.  Best, Dr. Emer.

You need a formal evaluation as hyperpigmentation is often treated best with lasers and skin care done by a cosmetic dermatologist.  Best, Dr. Emer.

Diffuse discoloration should be managed with Luminase and Exfolase creams, Melapads, and fractional laser. Pigmentation Correction Complex supplements should also be used. Best, .Dr. Karamanoukian#Realself100 Surgeon

For pubic discoloration, I would use a combination of Luminase creams + Exfolase lotion; plus once monthly light chemical peels. Best, Dr. Karamanoukian Los Angeles

I suggest peels and lightening creams for this.  although, there is no "cure" for this and it is often worsened with rubbing.  best, dr. emer.