Light soy sauce, not to be confused with "low-sodium" soy sauce, is a type of Chinese soy sauce that is lighter in color and thinner in consistency than its dark counterpart. It's quite salty, and its primary function is to season and add saltiness to dishes.
Its flavor is more pronounced and less sweet than dark soy sauce. Light soy sauce is versatile and is used in a variety of ways. It can be used in cooking, as a marinade, and often as a dipping sauce. In many Asian dishes, it's the go-to sauce for stir-fries, steamed dishes, and as a table condiment.