Acne whether on face, back, chest or shoulder, affects 85% of all teenagers or more, according to American academy of Dermatology. About 30% of these individuals, acne persists throughout adulthood. An American Academy of Dermatology survey found that acne could be distressing for teens, causing both emotional and physical scars.An effective and safe treatmentCurrently broad-spectrum antibiotics are widely used in the treatment of Acne(3). Doxycycline is being used increasingly as an alternative to tetracycline and in cases where tetracycline is unresponsive. Doxycycline is more effective that tetracycline and drug resistance less likely to occur.Doxycylcine is used in a dosage of 100mg daily and in severe cases 100mg twice daily.Doxycycline is active against proprionibacterium acnes, considered the most important bacterial species in the pathogenesis of acnes.