英语

意思：allantoin是一种有机化合物，常用作皮肤护理产品的成分，具有促进细胞再生、保湿、镇静等功效。

怎么读（音标）：[əˈlæntoʊɪn]

用法：allantoin通常作为护肤品的添加剂，可以在面霜、乳液、洗面奶等产品中发挥作用。它也可以作为药物成分，常见于治疗创伤和烧伤的药膏中。

例句1-5句且中英对照：

1. Allantoin is a popular ingredient in skincare products due to its moisturizing and healing properties. (allantoin是护肤品中常用的成分，因其保湿和修复功效而受欢迎。)

2. This cream contains allantoin, which can help soothe and repair damaged skin. (这款面霜含有allantoin，可以帮助舒缓和修复受损的皮肤。)

3. The wound healing ointment contains allantoin as one of its active ingredients. (这种治疗创伤的药膏含有allantoin作为其中一种活性成分。)

4. Allantoin has been found to promote cell regeneration and improve skin texture. (研究，allantoin能够促进细胞再生并改善皮肤质地。)

5. The moisturizer is enriched with allantoin to keep the skin hydrated and supple. (这款保湿霜富含allantoin，可以保持皮肤水润柔软。)

同义词及用法：

1. D-panthenol: also known as pro-vitamin B5, it has similar moisturizing and healing properties to allantoin and is often used in skincare products.

2. Aloe vera: a natural plant extract that is also known for its soothing and healing properties, commonly found in skincare products.

3. Glycerin: a humectant that helps to attract moisture to the skin, providing hydration similar to allantoin.

4. Centella asiatica: an herb commonly used in traditional medicine for wound healing and has similar effects as allantoin.

5. Zinc oxide: a mineral commonly used in sunscreen and diaper rash creams, it also has anti-inflammatory properties like allantoin.

编辑总结：

总的来说，allantoin是一种多功能的有机化合物，在护肤品和药物中都有广泛的应用。它具有促进细胞再生、保湿、镇静等功效，常与其他成分如D-panthenol、芦荟等一起使用以达到更好的效果。作为网络词典编辑翻译人员，我们需要了解这些常用的成分及其功效，以便帮助读者更好地选择适合自己的护肤产品。