Black Penetrating Dye - best leather potent dye that actually penetrates the leather. It can be used on leather for re-coloring or touching up.
Deeply penetrating dye for dyeing leather through and through
Will shoe polish dye leather? - Quora
Tarrago Penetrating Dye 50ml For Shoes Bags Jackets
MAVI STEP Leather Repair Base Liquid Filler is an effective tool for repairing deep damage on smooth leather products. It eliminates deep scratches, cracks, tears on shoes, furniture, car interiors, etc. Penetrating deep into the material, the product cross-links the fibers and protects them from destruction in the future. The product is white, requires sanding (leveling) and painting.
Liquid Putty for Leather Mavi Step Leather Repair Base
Metallic Oil Slick Leather Backpack and Tote, FREE Purse, Rainbow
Does spray paint stay on leather shoes? - Quora
How To Dye Leather - From Prep Through Surface Finishing
Tarrago Brands International, S.L.
Re-colour your shoes and other leather goods!
Fiebing's Leather Dye - Smooth Leather Dye USMC Black
Dye Your Shoes (or Other Leather Goods) : 5 Steps (with Pictures
Leather Dye Deep Penetrating, For Natural And Synthetic Leather
DIY - How to Dye Leather Boots
Best Oil for Leather: Oils to Soften & Condition Real Leather
Tutorial: How to dye leather shoes & handbags - The Dreamstress