Welcome to part four of my five-part DIY Holiday Gifts Using Essential Oils series. This week we are making gifts to elevate your bath routine to a spa like experience. You know that week between Christmas and New Year’s when you aren’t really sure what day it is? Well, that is the perfect time to pamper yourself and do some self-care after a busy holiday season. And is there anything more relaxing than a luxurious bath? That is why I think these DIY bath salts, bath bombs, and bath oils…