I bought this to use on my two year old Birkenstocks and they look good as new. At the bend point of the sandals near the toes the cork had started to have noticeable wear and had started to come away from the leather foot bed a little, but I just made sure I got a little bit of the cork renew in there and now you can't even tell. I added a second coat at those bend points for good measure, but most of the way around I just used one coat which seemed sufficient, and I've never sealed them before.

I was worried when I first opened the bottle because the brush seemed a little big, and I thought it was going to be difficult to use, but it's stiff so it is fairly accurate. The only trouble I had was getting close to the straps without also getting the cork renew on them. It does wipe off though, so if you make a little mistake it shouldn't be a problem as long as you take care of it right away.

As a previous reviewer had mentioned, it takes very little product to treat two sandals so this little bottle will last you a long time.