Curse stacking help

Hello, I am following a guide playing RF Inq.

I have a CwDT setup that applies Flammability curse
and a Frostblink setup that applies Elemental Weakness curse
and a cluster jewel with Master of Fire that applies Fire Exposure

Do all those stack?

The guide said to start with Flammability and replace with Elemental Weakness once I have ashes. I dont know what that means so I kept both. Maybe the Cover enemies in ash debuff?

ashes would probably be

ashes of the stars - neck




exposure is not a curse, so yes, you can use it with a curse.



HOWEVER

Flammability and Ele Weakness are both curses. without a source of 'you may apply an additional curse', you can only have 1 curse on an enemy at a time.


IF you have a source of +1 max curse, you can use both just fine.


(you swap to ele weakness when you have the neck, because the quality on flammability is worthless, but quality on ele weakness is VERY good)