根據自己的用量，往勺子裏倒壹點，然後加點水，大概是3比1的比例(小蘇打3，水1)，攪拌成糊狀即可。如果堅持用小蘇打刷牙壹個月，還是應該早晚至少刷壹次。吃完之後也會漱口或者刷牙，然後就會看到牙齒變白。具體操作步驟如下:
1.第壹，在商店或者超市買可食用的小蘇打粉，切記壹定要食用。
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2.下壹步是制作小蘇打牙膏。根據自己的用量，往勺子裏倒壹點，然後加點水，大概是3比1的比例(小蘇打3，水1)，攪拌成糊狀。
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3、堅持用小蘇打刷牙壹個月，仍然早晚至少刷壹次。吃完東西也會漱口或者刷牙。
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4.之後，妳會看到牙齒變白。
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註意事項:
1、小蘇打也叫小蘇打粉、食用堿或碳酸氫鈉。
2、早晚刷和飯後刷。