手工皂,原料裏有燒堿,即氫氧化鈉。
“手工皂與化學清潔劑不同,在與水接觸後大約24小時後,會被細菌分解成水與二氧化碳。”
==〉鈉到哪裏去了?
以前洗衣服用的黃肥皂,差不多就是現在時髦的手工皂。那玩藝,用多了燒手。
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