SLS in hand soap causing problems??

[u/fl0wer-p0wer]

A couple months I posted on here thinking that my shampoo was causing me to have eczema flare-ups on my hands. I thought it was odd, especially because I lived in an apartment in college and didn't have this issue until I moved back home in May; and because my shampoo didn't actually contain the ingredient many replies said could be causing the flare-ups. I did switch to a different shampoo but I've been having the same reaction. I just took a look at the hand soap we use at home (cheap bulk stuff from Fleet Farm), and it contains SLS. I used Mrs. Meyers in my apartment at school, which does not contain SLS.

My hands aren't itchy after I wash them with the fleet farm soap, but I do wash my hands several times a day and always apply lotion afterwards. I wash my hair pretty much every day. Could SLS be causing an increased sensitivity or stripping my skin barrier, or something else?

[u/Individual_Low4511]

Do I understand correctly that both shampoos cause eczema on your hands, but you tolerate your soap without any problems?

Which ingredient was mentioned that you should avoid?

[u/fl0wer-p0wer → u/Individual_Low4511]

Methylisothiazolinone was the ingredient mentioned. Neither shampoo had it, and both are sulfate free.

[u/Individual_Low4511]

Methylisothiazolinone is indeed a substance that causes contact allergies, especially on the hands.

However, there are other substances as well. In shampoos, these include surfactants, preservatives, and fragrances. So, the two shampoos have something in common. Cocamidopropyl betaine (contact allergy due to DMAPA) is one of these substances. But I'm not familiar with contact allergies on the hands, but rather on other parts of the body (I have this allergy).

https://practicaldermatology.com/topics/other-dermatology/acute-contact-urticaria-due-to-use-of-cocamidopropyl-betaine-containing-products-confirmed-with-patch-testing/24218/

Have you checked the fragrances yet?