Shampoo bars and liquid shampoo both clean your hair well. The difference is in how they feel to use, how long they last and how much packaging you throw away. A bar suits you if you travel a lot, want a plastic-free bathroom or like a compact routine. A liquid shampoo suits you if you love a big lather, share with a household, or want a matching conditioner in the same range.
Here's how the two compare, side by side, and how to get the best from whichever you choose.
The quick comparison
- Lather: liquid shampoo lathers faster and more. A bar lathers well once you work it between wet hands or across wet hair.
- How long it lasts: a bar that's kept dry between uses lasts a long time because it is concentrated. A liquid shampoo goes further if you only use a coin-sized amount.
- Travel: a bar wins. It's solid, so it doesn't count as a liquid in hand luggage and can't leak in a wash bag.
- Packaging: a bar usually comes with little or no plastic. A liquid shampoo comes in a plastic bottle.
- Sharing: liquid is easier when several people use the same shampoo every day.
- Hair type: both can work for any hair type. Very dry, curly or afro hair usually needs a conditioner afterwards either way.
When a shampoo bar makes more sense
You travel or go to the gym
A bar is small, light and leak-proof. Pop it in a tin or a sealed pot once it has dried and it sits happily in a gym bag or hand luggage. Our travel toiletries checklist has more space-saving swaps.
You want less plastic in the bathroom
If you're trying to cut down on bottles, a bar is the easiest swap to make. We cover more ideas in plastic-free bathroom swaps.
You like a simple routine
A 2-in-1 bar cleans and conditions in one step, which is handy for busy mornings or for anyone with short or easy-going hair.
When liquid shampoo makes more sense
You love a rich lather
Liquid shampoo foams up instantly. If that feeling is part of why you enjoy washing your hair, a bottle is the better pick.
Several people share the shower
A pump or flip-top bottle is easier to share than a bar, which wears down faster and goes soft if it sits in water.
Your hair is very dry
Dry hair does best with a gentle, moisturising shampoo and a separate conditioner every time. A matching shampoo and conditioner set makes that easy. See what is the best shampoo for dry hair for what to look for.
How to make a shampoo bar last
- Keep it out of the water. Use a draining soap dish or a hanging bag, not the edge of the bath.
- Let it dry fully between washes. A wet bar softens and wears away quickly.
- Rub it on your hands or the roots, not all your lengths. You need less than you think.
- Store it dry before travelling. Pack it only once it is completely dry.
Our full guide to how to use a shampoo bar goes step by step.
Our picks
- For bars: XHC 2-in-1 Shampoo & Conditioner Bars. Solid bars in Coconut, Banana and Papaya. Plastic-free, vegan friendly and travel-friendly, in a 3 pack or a 6 pack.
- For liquid: XHC Argan Oil Shampoo Twin Pack. A nourishing, moisturising Moroccan argan oil shampoo in 300ml bottles, vegan friendly and paraben-free, as a twin pack or a 6 bottle stock-up.
Prices are live on Amazon, and orders are dispatched by Amazon.
Frequently asked questions
Are shampoo bars better than liquid shampoo?
Neither is better for everyone. Bars are better for travel and cutting plastic; liquid is better for a big lather and for sharing.
Do shampoo bars last longer than bottles?
A bar kept dry between uses lasts a long time because it is concentrated. A bar left sitting in water wears down much faster.
Can you take a shampoo bar in hand luggage?
Yes. A solid bar isn't a liquid, so it doesn't need to go in your liquids bag. Check your airline's rules before you fly.
Do I still need conditioner with a shampoo bar?
If your hair is dry, curly or long, yes. A 2-in-1 bar includes conditioning, but very dry hair usually benefits from a separate conditioner too.
