drying up doesn't equal to an allergic reaction..
an allergic reaction ranges from this:
to this:
to this:
depending on the severity and can lead to anything from severe itching, difficulty breathing, skin denuding to death..
your dryness probably means that your itr has alcohol in it, I wouldn't use it directly on my skin unless it was pure oil and free from alcohol..
and Allah swt knows best
:w: