Juniper oil is an essential oil that has been used in some ways to treat skin problems like eczema and rashes as well as those associated with acne at this time.  It is made of steamed, distilled juniper berries, and it is used to make gin among other things.  So it depends largely on your choice of use.  However, this woody smelling oil has been used as an antiseptic, antibacterial, and anti-inflammatory, which is what actually makes it so effective as a general acne treatment. 

Its main components are actually various chemical components, and they have been also used in some cases to treat and relieve arthritis because of their anti inflammatory properties.  It does not dry out or irritate the skin in general terms, and it has been known to provide various other benefits as a whole.  But either way, it can be beneficial to include juniper oil in your skincare and acne fighting regimens whether in an oil, a cream, or otherwise.  If used in the right combination with other ingredients, its results can of course be maximized and therefore you will see greater benefits.  There are various recipes across the internet that include juniper oil.  But it’s a matter of finding the one that best suits you.