The process of creating rice water through fermentation involves steeping uncooked rice in water, allowing it to stand at room temperature for a period, typically 24-48 hours, until it sours slightly. This fermentation enriches the water with nutrients and acids beneficial for various applications. For instance, a simple method includes rinsing a cup of rice, covering it with 2-3 cups of water, and leaving it to ferment. This resultant liquid, strained and stored, becomes the core component.
This liquid has been used for centuries across various cultures, particularly in Asia, for its perceived advantages. Its benefits range from cosmetic applications such as hair and skin treatments to potential probiotic effects when consumed. The fermentation process increases the concentration of vitamins and minerals and creates organic acids, which are thought to contribute to its purported positive effects on skin health and hair strength.