Method 34 oz. Sea Minerals Naturally-Derived Gel Hand Soap Refill. It is biodegradable and naturally derived. It refills your bottle nearly 3 times. This 34-fluid ounce Sea Minerals Hand Soap refill is a convenient and eco-friendly way to keep your hands clean and refreshed. It is made with naturally-derived ingredients and is biodegradable, so you can feel good about using it. Plus, it refills your bottle nearly 3 times, so you can save money and reduce waste.