Return of Reckoning

Hello.
After having taken some time to understand how to equip the mask of the "true believer" (by asking for advice in game).
I would now like to know how to remove it?
because, when the "true believer" is in place it prevents to wear a halloween mask and thus prevents the realization of the quests of the halloween event.
I tried to apply the halloween masks in the cosmetic section of the character, the mask is in place but does not replace the "true believer" and the kills are not counted in the quests as "halloween mask wearer ".
Thank you for your attention

You can remove True Believer at the butcher surgeon, but it won't prevent halloween mask quests.

To complete those quests you have to actually wear the masks, not just have them as alternate appearance.

thx , i try that !