Hi notgummyworms, it's a real pity that you're not willing to try even half a teaspoon of all natural organic pine sap oil (completely redefined by the big-pharma drug industry/FDA as threat to their profits when the poverty stricken slaves took it internally for all sorts of ailments), as you'll be amazed to learn that almost all allergies are caused by a parasite ridden body. I was like this before I embarked on a parasite cleanse journey - full of allergies to all sorts of substances - now it's all gone along with the parasites. Anyhow - another slower but surely alternative to this, and more widely accepted is Organic Sulfur Crystals (aka MSM Crystals). Look for it on Amazon and read the reviews... different brands have slightly different doses, but generally it is about a 1/2 teaspoon to a full teaspoon dissolved in water, 2-3 times daily. It should ideally be taken together with Diatomaceous Earth for full benefit. Need to do about a month or 2 to see some effect.
Castor Oil does help (especially with pooping them out), but usually a catalyst-like push like the pine sap oil is needed to make them feel really uncomfortable and disabling their reproductive cycle. Killing them is an unfruitful endeavor because killing them also means killing yourself. I hope you get rid of the parasites fast and well and that your hair grows back - but don't give up on pine sap oil... it's literally a life-saving healing oil sent from heaven. Watch more videos from Sun Fruit Dan.