Many detection methods of emulsion are commonly used for water detection, and there is no heavy metal when it sinks to the bottom of the water.
You can also rub a little on your hand, and then rub it on the back of your hand with a dime. If it appears pale silver, it proves that it contains heavy metals.
Shake hard, there is a delicate layer of bubbles, and it will not fade for a long time, which is the condition of a good lotion.