polyglycerin

例句：

1. 1. This product contains polyglycerin, which helps to moisturize the skin.
   该产品含有聚甘油，有助于滋润皮肤。
2. 2. The polyglycerin in this cream is known for its anti-aging properties.
   这种霜中的聚甘油因其抗衰老特性而闻名。
3. 3. Polyglycerin can be used as a thickening agent in cosmetics.
   聚甘油可以作为化妆品的增稠剂使用。