Is It Possible to Thin the Skin on the Nose?

You can thin the skin during rhinoplasty. This is done by conservatively defatting the skin primarily along the dorsum and around the nasal tip. The procedure is performed during your rhinoplasty and from below the skin. The surgeon cannot be over aggressive in this procedure as the potential complications from over thinning the skin can be catastrophic. It sounds as if you have had acne problems, too.
I would suggest a good skin care regimen and possibly topical or oral antibiotics for these problems. I would not suggest any long term use of topical steroid creams to help with these problems, however, your surgeon may elect to inject your nose with steroids following surgery in order to prevent scar tissue from building up and causing thickening of the skin around your tip.

There are ways to thin the nose a bit during rhinoplasty. However, the surgeon must use extreme care not to overcorrect the area or you will end up with an undesirable result. I recommend scheduling a consultation with a few board-certified facial plastic surgeons who have extensive experience and expertise in rhinoplasty techniques. A qualified surgeon will know how to customize your treatment plan to ensure the best possible outcome. If you would like to address your acne prior to surgery, a laser resurfacing treatment could be an effective option.

The skin can be thinned during rhinoplasty, but it sounds like you might benefit from laser resurfacing to minimize the blackheads too.  If texture on the nose is an issue, laser resurfacing can help.  Meet with a Board Certified Facial plastic surgeon to discuss.  Be well!