But the electrodes used were large, rigid and made of silver chloride, which can cause skin irritation if kept in place for long periods of time.
但是他们的电极体积大并且僵硬，由氯化银制成的，长期放置在皮肤上容易引起皮肤刺激过敏。
2
"Too much cross linking reduces elasticity and makes the skin stiff and rigid, and these are the conditions that encourage wrinkled skin," Werman said in a statement.