Hello, and welcome!
Yes, you can bring your cosmetics and curling iron on the plane, in your checked luggage. However, regarding the curling iron, please note the following:
The only kind of curling and straightening irons you have to be concerned with are the types that take a butane cartridge. These are only allowed in your checked baggage, as long as you only have one and a safety cover must be over the heating element. No spare cartridges are allowed. This type of iron is not permitted in your carry-on luggage.
Your stun gun may also be packed in your checked luggage, but make sure to remove the battery before packing it and make sure the safety is on.
I hope this helped and wish you a wonderful trip and a Happy New Year!
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