However, more researchers are required to clarify the potential role of betaine.

然而，需要更多的研究人员来阐明甜菜碱的潜在作用。

I believe that they are using this as their primary surfactant, and the cocamidopropyl betaine is the secondary surfactant in this formula.

我相信他们用这个作为主要的表面活性剂，椰油酰胺丙基甜菜碱是这个配方中的次要表面活性剂。