Luffa contains protein, fat, carbohydrate, calcium, phosphorus, iron, vitamin B 1 and vitamin C, as well as saponin, plant mucus, xylose gum, bitter substance of Luffa, citrulline and so on. Every 100g contains protein 1.4- 1.5g, fat 0. 1g, carbohydrate 4.3-4.5g, crude fiber 0.3-0.5g, ash 0.5g and calcium18-28. Ascorbic acid 5-8mg. [6] Luffa contains B vitamins to prevent skin aging and vitamin C to whiten skin, which can protect skin, eliminate plaque and make skin white and tender. It is a rare beauty product, so Luffa juice is called "beauty water".