Not on beige claire, but I did it on my yellow jumbo and my red jumbo, both lamb. The yellow was because it was so light and the red to lock in the color. Essentially, it's a coating they put on the bag. Can ONLY be done through Chanel, so don't take it to someone that claims they know what they use, because it's not worth the risk. When you first get it back it will feel like your lambskin is less porous and more durable. It feels a TINY bit stiffer, but then it just goes back to normal. I've noticed that it keeps it from scratching as easily too...WAIT, it makes it a little more difficult to scratch, but this is lambskin, so it's naturally still prone to scratches. Anyways, I would contact your boutique because they have to send it out and tell them to actually ask and that you know people that have done it and it IS possible. A lot of these SA's simply say no and don't bother checking. It cost me around $100 (give or take because I can't remember the exact figure). Hope that helps!