What methods have you tried?
I have one cosmetic lubricant product in Korea, and it is very clear and transparent. The only thickener in it is guar gum.
If the long natural fibers are what make it opaque, will using a homo mixer make it clear? Although I have already mixed it with a homo mixer, I thought maybe other more advanced mixers could make it possible.
And what are all those patents regarding clear guar solution?
Do you have any ideas that you have not tried but that might yield a clear guar solution?