Q. I have at lot of pimples around the top of my arms and on my back which tend to leave scars behind. The tiny pimples you are experiencing are usually caused by a build up or keratiniziation of skin cells. The top of the arms and back are two areas which area often neglected when it comes to scrubbing and moisturizing - this can lead to a thickening of skin cells which in turn can cause skin to break out. A thorough exfoliation of the area with a loofah sponge, followed by a deep, penetrating moisturizer should help clear up the problem. If you notice the area is red and irritated consult with a dermatologist - you may have a skin condition that needs medical attention.
Blackheads are pores that become clogged due to excess oils.
Regular facials and deep exfoliation treatments will throughly cleanse skin and shrink blackheads. You can also use makeup to help camoflague blackheads. Use concealor on the areas you notice most, then apply foundation and finish with a light dusting of loose powder. I moisturize my skin daily, but I still get dry patches of skin on my face. You have to moisturize your face regularly and you should also exfoliate to get rid of the dry skin.