I dyed the brazilian virgin hair uk and closure and left it overnight, and washed it out the next morning, the bundles dyed well and the lace wigs was still black. So when I added developer, I left the bundles to sit for 6 hours and washed it out. This brazilian hair bundles was great but please if you guys could please get the same hair extensions from the bundles down to the closure it will be awesome. I will definitely be ordering this lace front wigs uk again but next time I will just make sure I let the closure sit in the developer for maybe 36 hours.