✔ 最佳答案
You need to understand their 活性成分 lor. For example: 單氟磷酸鈉、水合氧化矽, 山梨糖醇, 氧化鋁, 甘油, 焦磷酸鈉, 矽靈*,泊洛沙姆338*, 泊洛沙姆407*, 聚乙二醇-12, 纖維素膠, 二氧化鈦, 糖精鈉, 烷基硫酸鹽, 香味劑
The above are good for 美白牙齒. I know where to buy. Email me if you're interested.
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