Skin tags, also referred to as acrochordons are usually harmless. Although the cause of skin tags is not yet clear but there's a common pattern that has been noticed. While anyone can get skin tags, but they're common amongst people that suffer from obesity, diabetes, cardiovascular diseases, or are pregnant. Another factor is if the skin tags sort of "run in the family".
Since the actual cause of skin tags is unclear, there's no proven ways to prevent them completely. The best thing that can be done is reducing the risk of developing them. For example, overweight people can try to lose weight and it would help reduce the number of skin folds, which would further reduce the friction in those skin folds that is responsible for causing skin tags. However, if skin tags are genetic, there's nothing that can be done to change that.
While preventing new skin tags from occurring might be challenging, but removing existing ones is fairly simple nowadays. There's plenty of home remedies as well as professional procedures that are available. Although there's no scientific evidence that supports home remedies such as apple cider vinegar or tea tree oil, but a lot of people still use them and get results. Home remedies take a while though to work.
If you'd like to get your skin tags removed professionally, there's 3 common procedures that are widely used by doctors: