Hi AJ,
I have posted quite a few times about dealing with products and a sensitive scalp.

1.The scalp protector i get from debbie at splitends helps (i think its a walker product),i put plenty of it on before i use tape or glue.Seems to make a difference as it places a layer between your skin and the tape/glue.Makes sure it dries though before placing the hairpiece.
2.Leaving your piece off,and wearing a ballcap on the weekends really helps,and gives your scalp a rest.I only wear for 5 days before i remove.

Regards Topcat