The answer to this question is generally, herb infused oils are safe. However, there is always an exception: Some herbs are not safe to use together with infused oils. You may be allergic to one, while you may not be allergic to others. This is the reason why it is always important to read the safety information and contraindications of the herbs before you buy and use them just to be sure that it will not pose a serious health risk to yourself.
Herb infused oils can be used in different things such as in culinary, for healing and for beauty. There are many articles found on the internet which shows you how you can make your own herb infused oil and while you can follow these articles, make sure you do your research first.