Help! Just sloshed weed killer on a new leather bag!!!

[Esker]

Dark tan leather, accidental splashes of weed killer. Have dabbed off and lightly dabbed with damp paper towel

What should I do???!

It is my DP's new work bag and his pride and joy, worse luck

Seems to be drying up nicely, but my main concern is: will the weedkiller eat the leather somehow?
It's designed to be harmful, and the directions say to wash off if you get on your skin, so I'm worried about what will happen to the leather...