I am 9 days post op breast reduction. Is it OK to use something on the incisions/stitches to keep them moist?

I would ask your surgeon first before putting any lotion/ointment/treatment on your scars. Sometimes surgeons use glue over your incisions, and putting any of the above treatments on could prematurely dissolve the glue. If they give your all clear, I usually have my patients put vaseline, coconut oil, vitamin E oil or anything that moisturizes and has a small chance of causing an allergic reaction. Around 2 weeks out from surgery if my patients are tending to scar dark or reddened I advise a silicone based gel or sheet to help decrease the redness faster and improve the look of the scar sooner.

I am a big advocate of the anti-inflammatory properties of Aloe.  My patients are advised to start using Aloe at least twice a day over the entire surgical area starting 2 days after surgery. This is good for decreasing wound inflammation and also acts as a moisturizer (Normal skin oil glands shut down in the face of swelling, so the skin is extra-dry.).Be sure to use a preparation of Aloe that does not contain any alcohol as this will just add to drying of the skin.