Rashes after Halo treatment. What went wrong? (Photo)

Hello, I am a 43 years old Asian. I recently have halo done. I didn’t see my sun spots removed nor pores being shrunk which I wanted to see the result. But the complexion of the skin was brighter. Then my esthetician asked me to apply melanin, and my face started breaking out with rashes. They look more like chicken pox with liquid filled head. They itchy and burn. I also see few scratch marks on my chin and lower cheeks. What did go wrong? My bf said I looked bad.