Yeah, I think they see 1kg+ bags of powder on the scanner it raises red flags. I'm almost certain they checked the TT website too, since they labelled it as soap dye, the only way they would have gotten that info was from the website since it doesn't say dye on the packaging. Anyway, it seems to be getting through customs without issue at least, I don't think they have the resources to even test it if they wanted to, at least where I live.