What are the new regulations, and what type of ivory do they apply to?
If you ever look on ebay, some sellers have listed their ivory scaled razors as being "creamy white natural material which is not bone," and some have listed genuine tortoise as celluloid. Although a few of them may not have known what they had, I'm fairly sure that a lot of them describe them like that to avoid legal issues.
Because there's quite a lot of mythologies surrounding straight razors, almost suggesting that they're some kind of concealed weapon like a switchblade, I usually describe them as "men's toiletries." Even in places like the UK where the knife laws are quite strict, straight razors are completely legal, so doing that isn't illegal or anything, it's just to prevent inconvenience to those who live in shared/ temporary accommodation and may not receive their mail directly from the postman.