I have a lot of white heads under my skin, like on...

Acne treatment :
1. consult a dermatoglist doctor to do the needed medical examnation and determine the treatment pathway
2. have a healthy life style , including : healthy diet , exercise , sleep and rest well
3. avoid stress 
4. usually doctor starts treatment therapy by topical antibiotics such as erythromycin
5. if topical treatment isnt effective , doctor may prescribe oral medication such as doxycycilin and isoterinoin
6. you can use laser therpy later after to renew your skin layer and get rid of unwanted hair 
is benzoyl peroxide useful in this case ?
vitamin A derivatives such as topical isotretinoin and acratin are better topically 
Food to avoid while treating acne :
1. chocolete 
2. bread and heavy carbohydrate food such as chips 
3. oily food 
4. condiments and spices 
General advices to treat acne :
1. avoid smoking and alcohol 
2. sleep well and at night 
3. get rid of hair around the acne area ( better to use laser treatment )
4. use a combination of treatment therpy such as oral and topical medications , as well as using cosmatic products that helps your case 
Acne causes :
1. infection
2. stress 
3. some types of food and medications 
4. smoking is a risk factor 
5. oily and hairy skin 
Needed medical examnations :
1. physical examnation by doctor 
2. bacteria culture