Travel & Transportation What is the 3 1 1 rule for hand sanitizer? February 5, 2026 by Tanp | Leave a Comment What is the 3-1-1 Rule for Hand Sanitizer? The 3-1-1 rule for hand sanitizer is a TSA guideline for carrying liquids, gels, and aerosols in your carry-on luggage. It allows travelers to bring containers of liquids, including hand sanitizer, that are 3.4 ounces (100 milliliters) or less per item, must fit in one quart-sized, clear […] Read more ยป