It is commonly thought that acne and other skin problems will disappear after you reach 20 years of age and your skin will look smooth and soft. It happens for few years but the pimples starts appearing again around 25 years of age. And these pimples are different from the previous ones as they are painful and very deep. These are called ‘adult acne’. Most of the people suffer from such acne and no exact reason is known for breaking out of these pimples. Here below, we are providing you information about the causes of adult acne along with the measures you can take to prevent them from happening.