Is It Safe to Do a 50% TCA Peel on my Arm?

Arms, forearms and hands do very well with 2-3 chem peels of Jessner's + 30-35% TCA done about a month apart for about $1000-1500 each session.  50% TCA is used for spot treatment of skin precancers and cancers. 

50% TCA is notoriously unpredictable and may scar. Lower percentages of TCA are much safer. Arms can be nicely improved using lower strengths of TCA artfully applied by a well trained peeling expert such as a dermatologist. See link below

I would recommend either a layered peel of Jessner and 25% TCA, or my favorite for arm rejuvenation is the Fraxel Dual. Unbelievable results in 2-3 sessions.