Mud, a new face-friendly spa in Chicago, is offering its sensitive-skinned patrons something unusual: breast milk facials.

Shama Patel, Mud’s founder, explains:

I really wanted to come up with something that was quick, effective, that appealed to the urban city girl…There are so many mommy blogs out there that talk about using breast milk to basically help with skin conditions.

The salon sources its white liquid gold from “certified milk banks” only. These banks get their supply from local nursing mothers who are aware their boob juice will end up on strangers faces for $40 a pop.