How do I get rid of this weird skin condition?

I have like a weird skin condition on both my shoulders. They're like a million small polka dots on my shoulders. They don't have like a 3 dimensional figure but rather a flat surface. They're like literally peeled onto my skin and don't know what it is. How do I treat? I I'm planning on buying that proactiv deep cleansing wash but i don't know if its right for me. any suggestions?