That's what I was thinking it's the two m preservatives.
I use suave, v05 and white rain, none of them give me the itches.
I"m currently using that toasted one now it works just fine for me.

Some products do make me itch, lotions with peppermint do sometimes for some reason. I'm not allergic that I know of but I have sensitive skin on my arms and neck where the itching sometimes happens with peppermint.
Low porosity, medium texture.

If it smells good put it in your hair, if it tastes good spit it out!