How Do You Actually Use a Shampoo Bar?

Volume III  •  No. 002

5-minute read

The first time you pick up a shampoo bar, you may wonder what to do with it. Rub it in your hands? Run it over your hair? And how can something so small possibly wash a whole head of hair?

The good news is that using a shampoo bar is wonderfully straightforward once you know one important thing: the bar is concentrated. Unlike bottled shampoo, it doesn't arrive with water already mixed in. You supply the water in the shower, and that changes how you get started.

There is a little technique to it, but no complicated new ritual. And if your first attempt produced more confusion than bubbles, a few small adjustments can make all the difference.

Start with more water than you think you need

Before you pick up the bar, get your hair thoroughly wet. Not just the surface: let the water reach the roots and scalp. Wet the bar, too. Water is what helps the bar release its cleansing ingredients and turn them into lather.

You can start by rubbing the bar between wet hands to make a little foam, then work that foam into your scalp. Or gently glide the wet bar over your hair near the roots a few times. There is no need to rub it back and forth along the full length of your hair. A few passes are usually enough to get started.

Set the bar down and use your fingertips to massage your scalp. Add a little more water as you go. You may be surprised by how much the lather grows. The idea isn't to scrub the hair itself; it's to clean the scalp, where oil, sweat and everyday buildup tend to collect. The lather can travel through the rest of your hair when you rinse.

Rinse well, letting the water run through your hair until the shampoo is gone. Follow with conditioner if your hair likes it, concentrating on the lengths and ends. That's it: wet, lather, massage, rinse.

If the first lather seems shy

Sometimes, when you first start to wash your hair, the bar doesn't make a great deal of foam, particularly if you've used styling products or gone several days between washes. That doesn't mean the bar isn't working. Add more water and massage a little longer before reaching for more shampoo.

If your hair is especially oily or has a lot of product buildup, a second, lighter wash may feel worthwhile. Other days, one wash will be plenty. Hair length alone doesn't determine how much shampoo you need; how wet your hair is and what you're washing out matter, too.

If your hair feels coated afterward, try a more thorough rinse next time and use less bar rather than more. If it feels dry or tangled, check whether you are rubbing the bar along the ends instead of keeping most of the cleansing at the scalp. Small changes in how you use a bar can change the experience quite a bit.

The right bar is about your hair, not just your favorite scent

Once you've got the technique, choosing a shampoo bar becomes more interesting. Fine hair, curls, dry ends, an oily scalp and hair that has been colored or heat-styled don't all ask for the same thing. That's why it makes sense to offer more than one kind of shampoo bar.

At Rowan & Thistle, our shampoo bars include Hydration Restore, Scalp Balance, Volume Boost, Texture Support and Strength Repair. The names point to different hair needs, but they aren't a set of rules. Someone with fine hair may still have dry ends. Someone with curls may also want more lift at the roots. It's perfectly reasonable to choose according to what your hair needs now, rather than fitting it into one neat category.

The ingredients are part of that story. Argan oil, for example, is valued in hair care for the soft, conditioned feel it can give hair. Rosemary is a familiar botanical in scalp-care products, while manuka is another ingredient formulators may choose when thinking about scalp care. You'll find rosemary and manuka in our Scalp Balance bar. These are thoughtful ingredient choices, (not promises that a shampoo can fix every hair concern).

And then there are botanicals such as hibiscus and butterfly pea, which remind us how varied the plant world is. An interesting botanical name can invite a closer look, but the important thing is always what the complete shampoo bar formula does for your hair. A beautiful ingredient list should come with a good wash.

Give the bar somewhere to dry

One last habit makes a real difference: let the bar dry between uses. Keep it on a draining dish or rack, away from a puddle and preferably out of the direct shower spray. A bar left sitting in water will soften and disappear faster than one allowed to dry.

If you're taking one along when you travel, let it dry before closing it in a container when practical. You don't need elaborate accessories, just a spot where water can drain away.

We've also put together a photo tutorial showing the process from wet hair to the first lather, full lather and rinse. If you'd rather see it than read about it, you'll find it here: [LINK TO ROWAN & THISTLE SHAMPOO BAR PHOTO TUTORIAL].

A shampoo bar isn't a test of your hair-washing skills. It's simply shampoo in a different form. Give it plenty of water, work where the washing matters most, and let the bar dry when you're done. After a wash or two, it should feel every bit as ordinary as reaching for a bottle once did.

Notes & Sources

American Academy of Dermatology Association, “Tips for healthy hair” (updated August 12, 2024): https://www.aad.org/public/everyday-care/hair-scalp-care/hair/healthy-hair-tips

DermNet, “Shampoos”: https://dermnetnz.org/topics/shampoo

Continue Exploring

See our shampoo bar collection: [LINK TO SHAMPOO BAR COLLECTION]

Explore the ingredient behind Scalp Balance: [LINK TO ROSEMARY HERBARIUM ENTRY — IF AVAILABLE]

Watch our step-by-step photo guide: [LINK TO SHAMPOO BAR TUTORIAL]