论文部分内容阅读
用pH试纸鉴别爽肤水:选择爽肤水,应以弱酸性为宜,因为洗脸后,肌肤偏于碱性,只有弱酸性才能达到平衡。那么,该怎么选择一款不会刺激皮肤的爽肤水呢?最好的方法就是测测它的酸碱值,也就是通常所说的pH值。你可以先去药店买一小沓pH试纸,然后在试纸上滴两滴爽肤水,如果pH值小于7,试纸会呈现红色,也就是酸性;大于7则呈现蓝色,也就是碱性;如果结果是7,即为中性,这代表你的爽肤水比较温和。但如果你需要具有收敛或
Use the pH test paper to identify toner: Choose toner, should be weak acid is appropriate, because after washing the skin partial to alkaline, only weak acid to balance. So, how to choose a does not stimulate the skin toner? The best way is to measure its pH, which is commonly referred to as pH. You can go to the pharmacy to buy a small amount of pH test strips and then drop two drops of toner on the test strips. If the pH is less than 7, the test strips will be red, that is, acidic; those that are larger than 7 will be blue, that is, alkaline; if the result Is 7, is neutral, which means your toner is more gentle. But if you need to have convergence or