坐飞机可以带 固态剃须皂块 吗？（美国TSA/加拿大CATSA标准）

可以随身：固体日化用品（润唇膏、固体止汗膏、香皂块等）允许正常随身携带登机。

允许托运：可以放入托运行李中正常托运。

Standard carry-on baggage size allowances apply; TSA publishes no individual numerical cap for personal use.

Standard toiletries and liquids conforming to the 3-1-1 rule (containers under 3.4 ounces / 100 ml inside a clear quart bag) require no separate declaration. You simply place the bag in a screening bin. Medically necessary liquids exceeding 3.4 ounces must be verbally declared to checkpoint screeners before inspection.

If liquid containers exceeding 3.4 ounces (100 ml) are detected in carry-on baggage without an infant or medical exemption, screeners will not allow them past security. Travelers must surrender the item for destruction, return outside security to place it in checked luggage, or mail it home.

CATSA: Yes — shaving soap is allowed in carry-on baggage through Canadian security checkpoints. In checked bags: Yes — allowed in checked baggage with proper packaging.