So I made this and after a couple days it separated with watery liquid on top. (bodyunburdened.com)
I pour the clear and watery liquid on a cotton pad and swipe it over my face, especially over my T - zone. (berriesinthesnow.com)
The very last time the buttermilk separated and it was just these clumps of gray / brown substance (I used dark brown sugar) with watery liquid around it. (smittenkitchen.com)