am730 : 精華液可修復強度藍光波(高至446nm)
多謝am730介紹ignae 抗藍光精華液
One nanometre (nm) is 10−9 metre
0.000,000,001 of a metre
毫微米，納米，奈米
參考:
https://www.britannica.com/science/nanometre ;
cambridge dictionary
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