So, I've used Fruit of the Earth's Aloe Vera %100 Gel for a couple months now.  I usually use it to calm acne inflammation.  I know aloe is supposed to be soothing, but this stuff stings my skin at first.  Other than natural aloe vera, it includes these preservatives:

thriethanolamine, carbomer, tetrasodium edta, dmdm hydantoin, diazolidinyl urea

Is there anything in that list that could cause irritation?