OO1-- Download the app polarr or if you have it open the app
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OO2 - Then choose a picture and add styles at the down left corner on
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OO3- When it come on your screen click " import filter"
OO4- when it's pops up click "import from pictures "
OO5- Then you put in the picture of the screenshot/saved code
( Not my filter @/mxnsoon on Instagram)
OO6- will give you a preview of how the filter looks like
OO7- then you save it and then you have it in your 'custom' and your done
I hope that was helpful for the reader's who don't know how to add the filter C: