* Scientifically speaking: Both lipstick and mascara are semi-solids. They have a solid structure but contain enough liquid components to give them a creamy or paste-like consistency.
* For travel purposes: The Transportation Security Administration (TSA) in the US considers both lipstick and mascara as liquids when it comes to carry-on luggage. This is because they can leak or spill, and the TSA has a 3.4 oz (100ml) limit for liquids in carry-on bags.
So, the answer is:
* Scientifically: No, lipstick and mascara are semi-solids.
* For travel: Yes, they are considered liquids by the TSA.