飛行機にコスメ・化粧品を持ち込める？（米国TSA・CATSA規則）

条件付き持込可：航空保安基準の指定条件および制限内で持ち込み可能です。

受託手荷物：数量制限および指定の梱包基準を満たす場合に限り預け入れ可能です。

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: Restricted — containers over 350 ml (12 oz) must be screened separately. In checked bags: Yes — allowed in checked baggage with proper packaging.