Hi...dear Ashish..,
Thanks  for choosing HCM.,
Frequent Masturbating ...is not at all problem for health...,
MASTURBATION.......is the self-stimulation of the genitals to achieve sexual arousal ...,
and pleasure, usually to the point of orgasm...It  is a very common behavior...,
even among people who have sexual relations with a partner..,
95% of males and 89% of females reported that they have masturbated....,
Masturbation is  a good way of relieving the 
sexual tension...,
Masturbation also is a safe sexual alternative ..,
It does not cause any physical 
injury or harm to the body..,
There is no relation between 
Acne and Masturbation....
Acne is 
Hormonal hyperactivity..,where as..,
Maturbation  is ....sexual behavior with hyperactivity of sexual hormone..,
ok...good luck