Fun product!
I used this for a unicorn costume so I'm not 100% sure if it needs to be reapplied since it was for a night out. It was easy to apply and looked great on. I did not try for a super clear rainbow but I don't think it'd be too hard to do. My skin is fairly sensitive and the powder did not irritate. It's a fun product and can be made more subtle for non-Halloween use.
Rating: 5 stars