The properties of Rooibos
As a fresh leaf, rooibos contains a high content of ascorbic acid (vitamin C), which is lost when made into tea.
Rooibos tea does not contain caffeine and has low tannin levels compared to black tea or green tea. Rooibos contains polyphenols, including flavanols, flavones, flavanones, dihydrochalcones, aspalathin and nothofagin.
The processed leaves and stems contain benzoic and cinnamic acids.