Morocco · The Hammam

What Is Ghassoul Clay? Morocco's Traditional Hammam Clay

By Javier  ·  Morocco  ·  A Javier Discovers story

In a Moroccan hammam, ghassoul isn't a spa product. It's the plain grey-brown clay that comes after the steam, the soap, and the scrub.

Ghassoul clay, also spelled rhassoul or rassoul, is a natural clay mined in Morocco's Middle Atlas region and sold as a fine powder or as dried pieces. The name is often said to come from an Arabic word meaning "to wash," and washing is what it has long been used for: hair and body, at the hammam and at home.

This guide covers what ghassoul clay is, where it fits in the traditional hammam, how people use it at home, what to look for when buying it, and what to keep in mind before trying it.

The short answer Ghassoul (rhassoul) clay is a grey-brown mineral clay from Morocco's Middle Atlas region. In the Moroccan hammam it's mixed with water or rose water into a paste and used to wash the hair and body, traditionally after steam, black soap, and the kessa scrub.

How Ghassoul Clay Is Used

In the hammamAfter the ScrubA traditional hammam visit follows a familiar order: warm steam, beldi black soap, a scrub with the coarse kessa glove, then a rinse. Ghassoul clay often comes near the end, spread on and rinsed off with warm water.
On the hairThe Old Hair WashIn many Moroccan homes, ghassoul has long been used to wash hair: mixed into a smooth paste, worked through, and rinsed out.
At homeMixed by HandThe powder is mixed with warm water, and sometimes rose water, until it's smooth. Some families keep their own versions, prepared with herbs and dried in pieces.
The clay itselfGrey-Brown, Not WhiteGhassoul is a magnesium-rich clay with a grey-brown color and an earthy smell. If a clay sold as rhassoul is bright white, it's likely something else.

Trying It at Home

People who try ghassoul the Moroccan way usually mix the powder with warm water or rose water into a smooth paste, spread it on the body or work it through the hair, and rinse well with warm water. Many do it after a warm shower, echoing the hammam's steam. Follow the directions on the package you buy. For more on the hammam itself, see the Moroccan hammam, explained.

A few cautions. Patch-test on a small area first, keep the clay out of your eyes, and stop if your skin feels irritated. Clay can feel drying for some people. If you have a skin or scalp condition, ask a dermatologist before trying it. Rinse the tub or shower afterward, since wet clay can make surfaces slippery.

What to Look For When Buying

Look for clay sold as 100% ghassoul or rhassoul from Morocco, with no added fragrance or fillers. It should be grey-brown, not white. For background on the clay and the region it comes from, Wikipedia's rhassoul entry is a good starting point.

The clayZakia's Morocco Rhassoul ClayRhassoul clay powder from Morocco, sold as plain clay to mix yourself.Check today's price on Amazon
This is an Amazon affiliate link. Javier Discovers earns a small commission at no cost to you.
A Javier Discovers story: an afternoon in a Fez hammam The last room is the warmest. Light falls in thin beams from the small openings in the dome, catching the steam. An attendant stirs grey-brown clay in a dented metal bowl until it's smooth, then sets it on the stone bench beside a bucket of warm water. Around the room, the talk goes on, unhurried. Outside, the medina is loud and bright. In here, nobody is in a rush to leave. Javier's stories are narratives built from research into each place and its traditions.

Ghassoul Clay: Common Questions

What is ghassoul clay?Ghassoul clay is a natural grey-brown mineral clay mined in Morocco's Middle Atlas region. It's sold as a powder or dried pieces and has long been used in Morocco to wash the hair and body.
Is ghassoul clay the same as rhassoul clay?Yes. Ghassoul, rhassoul, and rassoul are different spellings of the same Moroccan clay.
How is ghassoul clay used in the hammam?In a traditional Moroccan hammam, it usually comes after steam, black soap, and a scrub with the kessa glove. The clay is mixed into a paste, spread on, and rinsed off with warm water.
Can I use ghassoul clay on my hair?It has long been used as a traditional hair wash in Morocco. Patch-test first, keep it out of your eyes, and follow the directions on the package. If you have a scalp condition, check with a dermatologist.
What do you mix ghassoul clay with?Traditionally, warm water or rose water, stirred until smooth.
Where can I buy ghassoul clay?Look for 100% rhassoul or ghassoul clay from Morocco, with no added fragrance. It's widely sold online as a powder.

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About JavierJavier is the storytelling voice of Javier Discovers. His journeys are narratives built from research into each place and its traditions, not first-hand travel accounts. Images on this site are AI-generated illustrations.
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Health NoteThis page describes traditional uses of ghassoul clay in Morocco for educational purposes only. It is not medical advice. Patch-test first, keep clay out of your eyes, and talk to a dermatologist if you have a skin or scalp condition.