When it comes to liquids, the TSA has a 3-1-1 rule: all liquids, gels, and aerosols must be in containers of 3.4 ounces or less, and they must be placed in a clear, quart-sized zip-top bag. This means your favorite foundation or mascara should be no larger than 3.4 ounces, or you'll have to check it. Yes, it's a real challenge to find travel-sized versions of your favorite products, but trust us, it's worth it.
Now, let's talk about solids. The good news is that you can bring as many solid makeup products as you want in your carry-on, like powder, blush, and eye shadow. Just make sure they're not oversized or obstructive, or the TSA might give you a side-eye. You can also bring makeup brushes and sponges, but be prepared for them to be screened separately.
