Why does leather shed?

We prefer vegetably-tanned top grain leather processed with organic dyes that originated from oak, chestnut, mimosa, and other plants. That's an eco-friendly method of leather tanning. Yet, on the first days of wearing a vegetably-tanned leather item, you can notice a slight shedding especially after exposure to water. It proves the leather is authentic. In contrast, chrome-tanned leather doesn't shed because it's chemically processed with harmful substances.