Have Groups with 350k group members

Hello,

i got 3 Groups in Facebook (German Groups)

1 Group about Hair Tutorials etc. (200k Group Members only Womes)
2 Group about Nails etc. (110k only Womens)
3 Group about Gardens, Gardening etc. (40k)

Any Idea how i can make Money with them?

All I know is that you could make load of money from promoting beauty products there