How to protect a suede Betty bag?


Dec 29, 2013
Hi everyone!
I am new to the YSL forum. I've never had a SL bag and I've never had a suede bag.
Suddenly I am OBSESSED with the medium Betty bag in black suede.

I am so close to buying it from Barney's, but a friend reminded me of her trouble with a black suede Sofia Coppola bag. Basically, her bag looks brownish grey now.
I'm curious if anyone is familiar with the sort of suede used on the Betty bags. Can some sort of protectant be applied? Have any of you had good or bad experiences with the suede?

Thanks so much!