Cool video! Those girls really kick a**!

Thank you! I know most people wouldn't use it for this purpose, but I find it interesting  

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My iClone short films: https://www.youtube.com/iClone316

You have to check in a graphics editor that the black is still fully black (0,0,0), so I always verify that. Don't rely on your eyes. If you check your weight map you'll find that in your case the black isn't true black.

If that is taken care of, the hair will not fall down. I would not have suggested this tip if it it didn't work.

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Hi Animagic, sorry that I took l so long to answer your latest suggestion. I did what you said and kept the black completely 000000, then systematically greyed down the white areas, but at the dark end of the eight samples I made in my image editor, it caused much of the hair to become transparent, and at the lighter end made no appreciable difference. And now the images won't load at all (not a new problem. Sometimes they will, sometimes not.) I've found that turning the solver/frequency down as low as it will go (60) helps considerably, but may simply use another hairdo for her, if I can find another long straight one with physics, as I have to render all my clips over again for other reasons anyway.

That sure is baffling as the weight map should not affect transparency at all. What is the specific hair you are using?

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Sounds like someone maybe putting the weight map for physics in the wrong hole if it's changing transparency. 

Reallusion Tutorials and Tips: https://www.youtube.com/@3DPixl 

I think you're onto something as there is an Opacity slot on the Weight Map dialog.

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How do you keep the hair from coming through her chest? I have an avatar with a long ponytail. When she crouches, it looks like she has long flowing chest hair.