Please discontinue wearing the Ava until your skin has completely healed.
All our raw materials are medical grade and biocompatible meaning they are not harmful to human skin and should not cause any skin reactions like a rash.
You could in the meantime try wearing the Ava on your other wrist and refrain from using any lotions, creams, fragrances, perfumes, or oils on your wrist where you wear the Ava. Should you find this to be an unsuitable alternative, please contact for Customer Support further assistance.
For a list of materials used in the Ava and the strap, please take a look here.