The phasing out of the "100ml liquid rule" is currently occurring at major airports worldwide as they install next-generation CT (Computed Tomography) scanners. When an airport "ends" the rule, passengers are typically allowed to carry bottles and containers of liquids, gels, and aerosols up to 2 liters in their hand luggage. These advanced 3D scanners allow security staff to see through liquids and electronics with high precision, meaning you also no longer have to remove your laptop, tablet, or toiletry bag from your suitcase. This change significantly speeds up security queues and reduces the plastic waste associated with travel-sized bottles. However, in 2026, the "end" is still a patchwork; while hubs like London Heathrow, Birmingham, and several European cities have scrapped the limit, others like Manchester or Brussels still enforce the 100ml cap until their equipment is fully upgraded. Travelers must verify the specific rules of both their departure and return airports to avoid having their full-sized toiletries confiscated on one leg of their journey.