CHIMNEYRX 300467 Paint N Peel Fireplace Cleaner – Removes Smoke & Soot Stains from Brick, Tile, & Stone Surfaces Around Fireplace Fronts & Hearths – Water-Based, & Easy Peel-Off, 1/2 Gallon

https://a.co/d/0eTqJFi8 "Pant N Peel" to remove smoke stains. Paint it on THICK because if you don't your fingers will be bleeding by the time you peel it all off in little cornflake-size pieces. Let it dry for 24 to 48 hours and then pull it off. It's good shit, works like a mud mask. There's different versions of the same name all over the Internet so don't count on this particular one that I have posted.