Know the 100ml liquid rule before your next flight

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If you're travelling on an international flight, liquids, aerosols and gels (LAGs) in your carry-on baggage must comply with airport security regulations. Following these rules will help you pass through the security screening process more quickly and avoid delays.

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The 100ml Rule

**Travel Liquids Bag**

Most international airports follow the 100ml liquids rule for carry-on baggage. Before travelling, make sure your liquids, aerosols and gels are packed according to these security requirements to avoid delays at the checkpoint.

Requirement

Details

Maximum container size

100ml (3.4 oz) per container

Containers over 100ml

Not permitted, even if partially filled

Plastic bag

One transparent, resealable plastic bag

Maximum bag capacity

1 litre

Allowance

One plastic bag per passenger

Security screening

Remove the bag from your carry-on and present it separately

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What Counts as a Liquid?

**LAGs 手提液體**

Some everyday items may not seem like liquids, but airport security classifies them as liquids, aerosols or gels (LAGs). These items must follow the 100ml carry-on rule if packed in your cabin baggage.

Category

Examples

Drinks

Water, juice, soft drinks and other beverages

Toiletries

Shampoo, conditioner, lotion, moisturiser, toothpaste, sunscreen

Cosmetics

Liquid foundation, mascara, lip gloss

Hair products

Hair gel, hair cream

Fragrances

Perfume, cologne

Aerosols

Spray deodorant, shaving foam

Food

Yogurt, jelly and other gel-like foods

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Items Exempt from the 100ml Rule

**Exempt Liquids**

Certain essential liquids are exempt from the standard 100ml carry-on restriction. However, you may be required to declare these items or present them separately during airport security screening.

Exempt Item

Notes

Prescription medicines

Carry only the amount needed for your journey. Supporting documents may be requested.

Essential medical liquids

Includes medically necessary liquids required during travel.

Baby milk, baby food and infant formula

Allowed when travelling with an infant.

Special dietary liquids

Permitted if required for medical or dietary needs during the journey.

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Duty-Free Liquids

**Duty-Free Bag**

Duty-free liquids purchased after passing airport security are generally allowed on board, even if they exceed 100ml. If you have an international transfer, keep the items sealed in a Security Tamper-Evident Bag (STEB) with the receipt, as they may be inspected during transit.

Requirement

Details

Purchase location

Buy after passing airport security

100ml limit

Larger containers are generally permitted

During international transfers

Keep liquids sealed in a Security Tamper-Evident Bag (STEB)

Proof of purchase

Keep the receipt with your duty-free items

Additional screening

May be required during transit

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Can I Pack Larger Liquids?

**Packed Luggage**

Yes. Liquids exceeding 100ml can usually be packed in your checked baggage, provided they comply with your airline's baggage and safety regulations. The 100ml limit only applies to liquids carried in your carry-on baggage.

Baggage Type

Liquid Rules

Carry-on baggage

Maximum 100ml per container, following airport security requirements

Checked baggage

Liquids over 100ml are generally allowed, subject to airline safety regulations

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Tips for a Faster Security Check

**Travel Liquids**

Packing your liquids correctly before arriving at the airport can help you get through security more quickly and reduce the risk of delays.

TipWhat to Do

Use travel-sized containers

Pack liquids in containers of 100ml or less.

Check the container size

The container itself should not exceed 100ml, even if it is only partially filled.

Use a clear plastic bag

Place your liquids, gels and creams in one clear, resealable plastic bag.

Keep liquids accessible

Store the liquid bag near the top of your carry-on so it is easy to remove at security.

Know what counts as a liquid

Toothpaste, creams, lotions, mascara, lip gloss and gels may also be subject to liquid restrictions.

Empty water bottles before security

Bring an empty reusable bottle through security and refill it afterwards where facilities are available.

Buy drinks after security

Purchase beverages after the security checkpoint if you want to bring them onboard, subject to applicable rules.

Use travel bottles

Transfer toiletries into smaller bottles to save space and reduce unnecessary weight.

Label your containers

Clearly label reusable travel bottles to identify their contents.

Prevent leaks

Tighten all lids securely and consider placing bottles in an additional zip-lock bag.

Choose solid alternatives

Use products such as solid shampoo, soap or perfume to reduce the number of liquids in your carry-on.

Pack essential medicines carefully

Keep important medicines in your carry-on and make them easily accessible for inspection.

Bring supporting documents

Carry a prescription or doctor's letter when appropriate for certain medicines.

Prepare baby-related items

Keep baby food, milk and other necessary items accessible as they may require additional screening.

Put larger liquids in checked baggage

Pack larger toiletries in your checked luggage when permitted and when you do not need them during the flight.

Avoid unnecessary liquids

Only pack the amount of toiletries you actually need for your trip.

Check transit rules

Review the liquid restrictions for your departure and transit airports, especially when connecting flights are involved.

Be careful with duty-free liquids

Keep receipts and required security packaging for duty-free liquids, particularly when travelling with connections.

Protect fragile bottles

Wrap glass or fragile containers carefully to prevent breakage.

Arrive early when necessary

Allow extra time for security screening if you are carrying medicines, baby products or other special items.

Check airline and airport guidelines

Rules can vary, so check the latest requirements before travelling.

Organise everything before leaving home

Prepare your liquids bag in advance instead of sorting through your luggage at the security checkpoint.

Separate items that need inspection

Keep potentially restricted or exempt items separate from other belongings for easier screening.

Buy toiletries at your destination

For longer trips, consider purchasing larger toiletries after arrival instead of carrying them in your cabin baggage.

Do a final luggage check

Before leaving for the airport, check that your carry-on does not contain any prohibited or oversized liquid containers.

Helpful Tip

A simple way to organise your luggage is to separate items into three groups: liquids for your carry-on, larger liquids for checked baggage, and drinks or other liquids purchased after security. This can make airport security faster and less stressful.

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Sakura

Sakura

Travel Writer

Lihat profil

She is a passionate writer who enjoys creating simple, helpful, and easy-to-understand content. With a strong interest in travel and practical guides, she aims to share useful information that helps readers plan better and travel with confidence. Through clear and straightforward writing, she hopes to make every journey feel less complicated and more enjoyable.

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Carry on liquid rules