Here's what I did on a Breitling white stitched strap. I took sneaker cleaner and a touch brush. I supplied a light amount of water warm To the tooth brush and put the white sneaker cleaner directly on the tooth brush. I scrubbed with little pressure and touched the leather as little as possible. I think rinsed the tooth bruised and lit the sneaker polish sit for about 3 mins. I then took of the whit smear polish with a wet toothbrush. I put leather conditioner on the strap just to be safe. This brought a throw away Breitling straps from a 4 to an 8 out of 10.

 

Here what I did on a Breitling white stitched strap. I took sneaker cleaner and a touch brush. I supplied a light amount of water warm To the tooth brush and put the white sneaker cleaner directly on the tooth brush. I scrubbed with little pressure and touched the leather as little as possible. I think rinsed the tooth bruised and lit the sneaker polish sit for about 3 mins. I then took of the whit smear polish with a wet toothbrush. I put leather conditioner on the strap just to be safe. This brought a throw away Breitling straps from a 4 to an 8 out of 10.

Sneaker cleaner is a good idea! I was not even aware of it. I'll give it a shot and see how it goes. Thanks!

 

Interesting idea. Let us know if it works for you.

 

my kid uses this stuff on his sneakers, leather safe and seems to do a good job:
8 oz. Premium Shoe Cleaner | Jason Markk Premium Shoe Care

 

I bought the sneaker cleaner at footlocker. Nothing fancy and it is safe to use on leather.