Chair Restoration Help

[ajglover]

Hey first time restorer here and I need help getting started on this project. I got these two used leather chairs theyre very comfy but need some tlc. There are a lot of dark areas and some kind of texture on the chairs. my goal is to clean them, smooth out these rough spots and give it a dye job. any suggestions on making that as easy as possible and which products to use?






Thanks in advance

- Anthony