Bring a little earth and sea into your hair-care routine.

This natural hair-care duo combines 250g of rhassoul clay with 50g of dried serrated wrack seaweed, giving you a simple way to prepare your own clay hair wash and seaweed conditioner at home.

Use the rhassoul to wash your hair, then follow with a seaweed conditioning rinse. Or use the prepared seaweed extract to hydrate the clay for a combined wash-and-condition treatment. Two ingredients, several ways to make the routine your own.

What’s included?

• 250g rhassoul clay powder, ready to hydrate.
• 50g dried serrated wrack seaweed, Fucus serratus, supplied as whole fronds for soaking.

These are dry ingredients, not a ready-mixed shampoo or bottled conditioner. Prepare a small amount with water when you need it.

Why rhassoul and seaweed work well together

Rhassoul is a mineral clay used for washing hair, face and body. Mixed with water, it becomes a smooth, soap-free wash that doesn’t foam or lather.

Serrated wrack releases a slippery, gel-like extract when soaked in water. This is the seaweed conditioner: it adds slip to your hair-care mixture and helps leave hair feeling softer, smoother and easier to manage.

Together, they offer a hands-on alternative to conventional shampoo and conditioner, with a texture you can adjust to suit your hair length and application preferences.

Three ways to enjoy your set

A simple wash followed by conditioner

Hydrate the rhassoul with water, use it to wash your hair and rinse thoroughly. Follow with prepared seaweed extract as a conditioning rinse.

A combined clay-and-seaweed hair wash

Use strained seaweed extract instead of plain water to hydrate the rhassoul. Apply to wet hair, gently work through and rinse thoroughly.

A slower hair-care ritual

Prepare a clay-and-seaweed hair mask, keeping the mixture moist throughout the treatment. Or use the seaweed extract alone on freshly washed hair before rinsing.

How to prepare the seaweed conditioner

Place approximately 10g of dried seaweed in 200ml of cold or lukewarm water.

The water begins to take on colour after around 10–20 minutes. Allowing one to two hours gives more time for the extract to develop its characteristic slippery texture. Strain before use.

You may see this extract called “seaweed oil”. Despite the name, it is a water-based infusion, not a pressed oil.

Prepare only what you need, using clean equipment. The extract is unpreserved, so use freshly prepared batches where possible rather than treating it like a shelf-stable bottled conditioner. The liquid keeps for a few days, best refridgerated, however you can also freeze it.

How to prepare the rhassoul hair wash

Put a small amount of rhassoul powder into a shallow bowl (not metal or plastic) and just cover it with water or strained seaweed extract. Leave it to hydrate for a few minutes before gently combining.

For a measured starting point with water, your rhassoul instructions use 10g clay to 14g water. Adjust the liquid gradually to achieve your preferred consistency; seaweed extract may behave differently from plain water.

A soft, smooth consistency works well for short hair. For longer hair, add more liquid to create a pourable mixture that is easier to distribute.

How to wash and condition your hair

1. Prepare your seaweed extract and hydrate a small portion of rhassoul.
2. Wet your hair thoroughly.
3. Apply the clay mixture to the scalp and gently massage. Distribute through the lengths without vigorous rubbing.
4. Keep the mixture moist, then rinse thoroughly.
5. For an additional conditioning step, apply strained seaweed extract to clean hair, leave briefly and give it a light rinse with fresh water.

If using the clay mixture as a mask, cover the hair to keep it moist. Do not allow clay to dry hard on your hair, as this makes rinsing more difficult.

A thoughtful gift for natural hair-care enthusiasts

For someone who enjoys simple ingredients and making their own beauty preparations, this duo offers something a little different. It’s a practical introduction to clay washing and seaweed conditioning, or a useful replenishment for an established routine.

Ingredients

Rhassoul: 100% rhassoul mineral clay.

Seaweed: dried serrated wrack, Fucus serratus.

Frequently asked questions

Do I have to mix the two products together?

No. You can wash with rhassoul hydrated in plain water and use the seaweed extract afterwards. Alternatively, hydrate the clay with the strained seaweed extract.

Will the clay lather like shampoo?

No. Rhassoul is soap-free and does not create foam. Apply gently and take time to rinse it out thoroughly.

Do I put whole seaweed pieces in my hair?

For the methods described here, soak the seaweed first and strain the liquid. Use the prepared extract in your clay mixture or as a conditioning rinse.

How many washes will the set provide?

This depends on your hair length, thickness and how much you use. You don’t need to prepare the whole set at once: start with small batches and adjust as you become familiar with the ingredients.

Can I use the rhassoul for anything else?

Yes. Rhassoul can also be prepared as a face or body wash. Patch test first, avoid the eyes and rinse before the clay dries on the skin.

Is it suitable for every hair type?

Hair responds differently to clay washing and seaweed conditioning. Start with a small amount and assess the result rather than assuming one routine will suit everyone. If your hair is coloured or chemically treated, test on a discreet strand first.

Care and precautions

Keep the dry ingredients sealed and dry, and use clean utensils when preparing them. For external use only. Avoid contact with eyes, patch test before use and stop if irritation occurs.

Your existing seaweed guidance advises checking with a doctor before use if you are receiving medical treatment, particularly for thyroid conditions or if taking blood-thinning medication. Retain the product’s supplied safety instructions.