It's perfectly safe for humans. I've been drinking it for weeks without side effects. I have a glass in the morning with my oats. Plus my mane is shinier than ever.
I knew there was a reason I never got permanently identifiable tattoos like everyone else in my age group and kept my hair and beard long so I can change my appearance with a pair of scissors and a razor in just a few minutes.
Background is completely irrelevant sand dunes.