So I found a bag of Epsom salt that I thought was pure. So I diluted it with water and sprayed my pepper plants with it ,because I've heard of the benefits of magnesium.Then I came back and examined the bag again and realized that it was therapy Epsom salt and it contained various essential oils including rosemary, peppermint, and spearmint oil. I don't know if the oils in it will effect my plants negatively but I hope they won't. If any one has any experience with this please help a fellow Gardener out.

I hope your peppers survive the essential oils and the Epsom Salts bath. Epsom Salts is Magnesium Sulfate, two minerals plants do need but in very minute amounts. In a home situation, if you are using a well balanced fertilizer, your plants don't need extra Magnesium or extra Sulfates. If they do show signs of deficiencies of trace minerals, it is usually a pH problem, not a nutrient problem.