Is liquid lipstick treated the same as regular stick lipstick?

No — liquid lipstick is a liquid/gel product and follows the standard 3.4 oz carry-on rule. Solid stick lipstick has no such restriction.

Lipstick

Solid stick lipstick is not a liquid, so it's allowed without restriction in carry-on and checked bags.

Carry-on

Allowed

Checked

Allowed

Allowed, no restrictions. Standard solid stick lipstick isn't a liquid or gel, so the 3.4 oz rule doesn't apply.

Allowed, no restrictions. No size or quantity limit in checked baggage either.

This applies to solid stick lipstick. Liquid lipstick or lip gloss is treated as a liquid/gel and follows the standard 3.4 oz rule instead.

Is liquid lipstick treated the same as regular stick lipstick?: No — liquid lipstick is a liquid/gel product and follows the standard 3.4 oz carry-on rule. Solid stick lipstick has no such restriction.