Suggest Remedy For Excess Body Hair And Dry Skin

I am an 18 year old male and I have two problems. My first problem is excessive body hair. I grow hair on my back and my shoulders and its definitely too much. My second problem is dry skin. I really want to know if these two problems are related. I understand that body hair increases with levels of testosterone. And I believe testosterone triggers the production of sebum which keeps skin moisturized. I also learned that sebum is made up of mostly triglycerides which I know make up most of the fat in whole milk. For all of my life I have been drinking skim milk which has no fat. Could this be the cause of both of my problems? and if not what is?