Hey mate,
Unfortunately we aren't really here to give advice on illegal activities, regardless of how realistically harmless the substance in question may be. It's not really our call to make to give you advice that may see you land yourself in trouble, even though you got the impression you had nothing to worry about. Really, it's your decision to make.
That being said, you didn't even give your location haha.
Personally I wouldn't risk it, however I'm in Australia where our customs seem to pick up just about anything, and just about everything is illegal even if it doesn't exist yet.
Sorry buddy!
