Remember the 3-1-1 rule: any liquid or gel you carry on board must be in individual 3.4-ounce (100 milliliter) containers or smaller, and every container must fit into a single clear, quart-sized bag.
Skip pricey travel-size items and buy empty travel-size bottles to fill with your favorite products. Just make sure you label everything. Keep the quart-sized bag easily accessible in your carry-on.
Are you worried about keeping hydrated before your flight? Bring an empty water bottle and fill it once you're through security.

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