Superlubrication offers an effective means to reduce energy consumption and extend mechanical component lifespan. Conventional liquid superlubricants, however, often pose environmental and safety risks due to acidity or poor biodegradability. Here, an eco-friendly liquid superlubricant, PA-Al(OH) 3, was synthesized via aqueous coordination between natural phytic acid and aluminum hydroxide, forming a multilayered complex. This structure enhances lubricant film stability, load-bearing capacity, and shear resistance. Tribological tests with a Si 3N 4/glass pair showed macroscopic superlubrication (μ=0.004) within 7   seconds of running-in, an ultralow wear rate (6.49×10 -8 mm 3·N -1·m -1), and stability over 28,000 cycles. Hydrogen bonding immobilizes free water molecules at interfaces, further reducing the shear resistance during friction. This study presents a novel strategy for developing sustainable, high-performance liquid superlubricants.