要怎么有效去除后背的痘痘和痘印？

#/vendor/phpunit/phpunit//node/add　 #/vendor/phpunit/phpunit//user/register　 #user/register　 #../../etc/passwd　 #../../../../../../../../../etc/passwd　 #/etc/passwd　 #../../../../../../etc/passwd　 #../../../../etc/passwd　 #../../../../../../../etc/passwd　 #../../../../../../../etc/passwd　 #../etc/passwd　 #../../../../../../../../etc/passwd　 #../../../../etc/passwd　 #../../../../../../../../etc/passwd　 #../../../../../etc/passwd　

URL https://pic2.zhimg.com/v2-b674e1179c0c173d04f3f2e506ec4147_b.jpg
URL2 https://www.zhihu.com/tardis/bd/ans/1962103724