Reading the product labels meticulously is the first thing to do. You need to check well and be sure that the paper product (or any cosmetic or personal products) DO NOT CONTAIN heartquaternium-15 or any of its alternative names, or any related substances containing formaldehyde and other formaldehyde-releasing preservatives.
Note down the following that needs to be avoided:
Avoid any products containing "formaldehyde". Find FORMALDEHYDE and FORMALDEHYDE RELEASER FREE products.
ALTERNATIVE NAMES of QUATERNIUM-15 to avoid include:
>>N-(3-chloroallyl) hexaminium chloride
>>Chloroallyl methenamine chloride
>>1-(3-chloroally)-3,5,7 triaza-1-azoniaadamantane chloride
>>Dowicil®75, Dowicil®100, Dowicil®200
Formaldehyde releasing products:
- >>Imidazolidinyl urea (Germall®)
- >>Diazolidinyl urea (Germall II®)
- >>DMDM hydantoin (Glydant®)
- >>Bromonitropropane diol (BronopolTM)
- >>Tris (hydroxymethyl) nitromethane (Tris Nitro®)
Since most of personal products uses Quaternium-15 or its dervivatives as preservative, finding a product won't be that simple. Getting products from a pharmacy with pharmacist assistance in finding Quarternium-free products will be a good idea.
Since, he is having a horrible allergic reaction to the chemical, self-test of a certain product before use will be a wise thing to do. Use a small piece of the Quaternium-free product in a small body area like at the folds of the hands. Do it twice daily for a week and if there is no reaction, do the test in the front part of the ear for another week. If no reaction, then most likely, such product is safe enough.
After such experiment, start using the product the usual way. Still consider the possibility of possible reaction if the product is used in large body areas so an anti-allergic remedy must be readily available just in case. If there is no reaction after usual use ,then the product is good for him - try to stick on such product.
Please note that most cosmetics and personal care products contain Quarternium-15 or its derivatives so be very careful to check the contents of any products before use. Those products include: soap, shampoo, lotions and creams, detergents,toothpaste, shaving products, etc.
It will be an advantage to stick to products that he has been using without reaction. Trying any new product always carry a risk so be very careful.
This LINK has more information.
Take care and Good luck!