Yes, minoxidil can cause facial hair growth. It is not uncommon for people who use minoxidil to experience an increase in facial hair growth. In fact, some people may even notice that their facial hair grows faster and thicker after using minoxidil. However, it is important to note that not everyone who uses minoxidil will experience increased facial hair growth. Some people may only see a slight increase, while others may see no change at all.