手工皂说到底是利用了油脂和碱剂(通常为氢氧化钠)产生的皂化反应,与用工业制成的香皂并无差别。而且,用来和油脂发生皂化反应的碱剂对肌肤损伤较大,若没有做充分的纯化去碱工序,对肌肤更易造成刺激。 Handmade soap, after all, is a saponification reaction that uses oils and alkalis (usually sodium hydroxide), and does not differ from soaps made using industry. Moreover, the alkali used in the saponification reaction with the grease damages the skin, and if there is not enough purification to degrade the alkali, the skin is more likely to cause irritation.