sometimes
if you're allergic to iodine, you'll probably have an allergic reaction
An allergic reaction to anything may result in fatal anaphylaxis. So yes, it can kill you.
I would say that the formula in the dye has changed and you now have a reaction. As your body changes there could be an allergic reaction, but my guess is a chemical change in the product. Try another brand.
nope, could be an allergic reaction
Yes.
Probably
well many people dye their own hair at quite a young age so when ever you like, i had mine first done when I was 12 but don't ever dye your hair straight away, make sure you do the allergy skin test 2 days before applying the hair dye or you may not know that your allergic and will have an allergic reaction, which isn't nice.
E122 carmoisine is a synthetic red dye present in some drinks. it can cause allergic reaction, which can include a rash similar to nettle rash.
Zak Bagans is allergic to the red food dye found in candies, icings, any un-natural red food contains the dye that he is allergic to
There is specially made hair dyes for people who have sensitive scalps or are allergic to an ingredient within the hair dye. You are able to buy these herbal or vegetable hair dyes over the internet or make it at home. I personally do it myself and I have to admit not only do I save a lot of money but it looks really good.
It can cause an allergic reaction to the due that expresses itself or feels very similar to a bladder infection. If you speculate you have this issue avoid consuming red dye at all costs. Persistent occurances can damage the kidneys.
The reason why shellfish allergy is asked is because of the link between shellfish allergy and iodine allergy (shellfish are rich in iodine). That does not mean that if your allergic to shellfish then you are allergic to iodine - you may be allergic to another component that is in the shellfish. Iodine is used in the thyroid scan as a dye and is injected into your veins. If you are allergic then the reaction would be quite quick and potentially serious. Asking about a shellfish allergy is to try to risk stratify those that may be more susceptible for a reaction and "prepare" the technician / radiologist for the worse case scenario. The main allergic reaction we would be worried about would be true anaphylaxis (if you've not heard of this then you probably not had it). Rashes and facial swelling would indicate a allergic reaction. Sickness, diarrhea and feeling "off" would suggest an intolerance rather than a true allergic reaction. Happy New Year! El Tango