One of the most common contributing factors is hormonal changes and imbalances that occur at the time of adolescence. Some other causing factors that send invitation to acne are emotional stress and sex hormones. When active during puberty, androgens (sex hormones), stimulate the oil glands typicall...

Acne involves the over-production of sebum from the sebaceous glands which results in the blockage of the pores with a sticky mass of the dead cells and oil. This creates a breeding ground for the opportunistic overgrowth of bacteria normally present in the skin. These convert the mass into compound...