Be very careful with Kombucha, I used it a few years ago and developed allergic dermatitis from it. It took me about 5 months to get rid of it. The doctor wouldn't even prescribe anything.
So i got desperate and started reading what would help ease the problem. I grow comfrey in the garden and i started soaking my face in comfrey tea all day long and after about 3-4 days the dermatitis started letting up. I had a few flare ups after that.
But since then i am very careful what i take in my body or put on my face.
I researched this stuff and bought a book on it and still ended up having problems. I will never touch that stuff again.