Cosmetics are not allowed to contain these things now. I can't read the test paper with a glass of water! There is another way to try. Apply the cosmetics to be tested evenly to a certain position on the back of the hand. After a while, rub it repeatedly with a gold ring (gold, platinum or pure silver) on the position where the cosmetics have just been applied. If the lead content is high, you will find that the rubbing area turns black, and vice versa. Pay attention to this test, wait for a while after applying cosmetics, or you won't get real results.