Testing for allergies for lanolin with products that contain lanolin is not necessarily going to give you a reliable answer. Especially if you already are allergy prone. Most products contain slightly different ingredients and unless you are absolutely sure you are not allergic to any of the other ingredients, this type of testing will tell you absolutely nothing (kinda what boboakalfb already said).
I would suggest you do buy the product and test it yourself. IMO that is the only way to know for sure. And you might have to try it a couple of times as well, since sometimes allergies need a couple of times before they kick in (trust me I know).
And as far as I know the Kent soap is the same as MWF, so I guess that would probably be your best option. Good luck and let us know how you fare! I have been thinking about buying some MWF as well, but am hesitant because of possible allergies... Oh well you only live once .
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