Not only teenagers suffer from blemishes, it is estimated that 1 in 4 adults between the ages of 25 and 44 experience blemishes at some point in their lives. Women often experience more blemishes than men due to changes in hormones.
Blemishes are still problematic in adults because of various factors which affect oil excretion and release. Oversensitivity to androgens, male hormones, found in both men and women can lead to excess oil production which in turn causes blemishes. Environmental stress can also impact on a person's skin. Unfortunately women suffer more than men with blemish ‘break outs’ due to the rise in hormone levels that occur prior to the period.
To help reduce the appearance of blemishes in adults a starting point could be to look at your lifestyle and making sure that you are getting enough sleep, drinking plenty of water and eating a healthy balanced diet. It is also vitally important to follow a regular skin routine involving cleansing, to clear impurities from the skin, and moisturising morning and night.