💇 Hair conditioner

Hair conditioner is a liquid, so any bottle larger than 100ml will be confiscated at the carry-on checkpoint. Screeners apply the same rule to conditioner as to shampoo, lotion, or any other liquid toiletry — the labeled container size determines whether it is allowed through, not how full it is. Full-size bottles must go in checked baggage.

Yes — the 100ml carry-on liquid limit for hair conditioner is applied consistently across the US, UK, EU, Canada, and Australia. All of these authorities require containers to be 100ml or less and placed in a quart-sized clear bag. There are no regional exceptions or more generous allowances for liquid hair products.

No — conditioner, shampoo, leave-in treatments, and similar liquid hair products are all handled identically at the checkpoint. The 100ml rule applies to all of them equally, and screeners do not distinguish between product types when applying it. If you have multiple liquid hair products, remember they all share the space in your single quart-sized bag.

Decant your conditioner into a travel bottle of 100ml or less before your trip and add it to your quart-sized liquids bag. Many travel-size conditioners are available in 75ml or 100ml sizes at pharmacies and airports. Solid conditioner bars are a completely liquid-rule-free alternative that can be packed freely in carry-on without any size restriction.