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/cgl/ - Cosplay & EGL

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>> No.10195181 [View]
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10195181

>>10194996

It's the nature of polyester, they're so different and so difficult to dye sometimes you can dip a bright red skirt into bleach and it won't even budge the colour. When you get the process right the dye goes pretty deep into the polyester and stays there. Similarly, even if there's a dye runoff, you still need a whole different process to get the polyester to "take" the dye, so instead the dye runoff simply washes out.

Natural fibres like cotton are bleached white and then dye really easily to begin with. If you overload a fibre with too much colour (not just red, blue and black are also problem colours) then the extra dye runs off. If there's white cotton it'll be pretty easily stained by the extra dye since the fabric dyes easily to begin with.

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