Central Tunisia, near Sbeitla · Hand-dug, sun-dried

Green Clay Masque: The Complete Guide

Argil is a primordial green clay dug by hand from an ancient seabed near Sbeitla in central Tunisia and dried only by the sun. It draws out impurities and excess oil, refines the look of pores, and is gentle enough for sensitive skin.

Ingredient
100% Tunisian green clay
Origin
Near Sbeitla, central Tunisia
Method
Hand-dug, sun-dried, milled
pH
7.26, gentle on skin
Use
Masque 1-2x a week, or spot use
Shelf life
Indefinite, kept dry
Green Clay Masque: The Complete Guide

What it is

Argil is pure green clay, nothing added. It took us more than a decade to find a clay with this mineral profile: strong enough to pull impurities, blackheads and excess oil out of pores, yet pH-neutral and gentle enough for sensitive skin.

Mixed with water or a flower water, it becomes a silky masque that leaves skin clean, clear and smooth, without the tight, stripped feeling many clay masks leave behind.

Where it comes from

The clay comes from a remote quarry near Sbeitla in central Tunisia, on what was once the floor of an ancient sea. It is dug by hand in dry chunks and dried under the desert sun. It is never kiln-fired: industrial clays are often heated to 500°C or more, which changes their mineral structure. Ours is simply sun-dried and milled into a fine powder.

How to use it

The weekly masque

  1. Use glass, wood or ceramic. Never metal. Argil's minerals react with metal and lose strength. A glass bowl and olivewood spatula are ideal.
  2. Mix. Stir 1 teaspoon of Argil with enough Roseau, Géran or warm water to make a smooth, yogurt-like paste.
  3. Apply. Brush onto clean skin, avoiding the eyes. Include the neck and chest if you like.
  4. Don't let it fully dry. Leave 8-10 minutes. When it starts to feel tight, mist it to keep it active, then rinse with warm water.
  5. Rehydrate. Mist Roseau and press in 2 drops of Hoba.
A mixed Argil green clay masque in a frosted glass bowl with an olivewood spatula

More ways to use Argil

  • In the shower. Apply the masque, let the steam keep it moist for 5-7 minutes, rinse last.
  • Spot use. Dab a little paste on a blemish or congested area and leave it on for 10-15 minutes.
  • Exfoliating masque. Mix Argil 1:1 with Poudre de Barie and massage gently as you rinse.
  • Back, chest and shoulders. Same method, larger batch.
  • Scalp. A thin layer of Argil and water on the scalp before shampooing helps lift buildup.
  • Feet and bath. Add a few spoonfuls to a foot soak, or to a bath with sea salt.

The chemistry

Clay works by adsorption: its mineral particles carry a charge that attracts oil, dirt and impurities to the surface, where they rinse away. Argil stays on the skin; it doesn't soak in.

Mineral / property Katari Argil Why it matters
Iron 4.7% Gives the green color; leaves skin looking brighter and more even
Magnesium 1.6% A mineral prized in skincare for comforting skin
Calcium Present Supports a smooth, healthy-looking surface
pH 7.26 Neutral and gentle, even on sensitive skin
Lead Below 0.004% Tested for purity

Mineral analysis: Laboratoire Central, Tunis.

Who it's for

  • Oily, combination and breakout-prone skin: absorbs excess oil and refines the look of pores without stripping.
  • Dull skin: a weekly masque leaves skin brighter and smoother.
  • Sensitive and dry skin: mix with Roseau instead of water, keep it on for less time, and always follow with Hoba.

For professionals

Argil is a reliable treatment-room masque: neutral pH, no fragrance, and it pairs with every Katari oil and flower water. Buffer it with Roseau for sensitive clients, or add Poudre de Barie for a gentle exfoliating step. Use glass or ceramic bowls and wooden or silicone tools. Available in back-bar sizes.

Storage and shelf life

Dry Argil keeps indefinitely. Store it in an airtight glass jar; left open, it absorbs moisture and smells from the air. Mix only what you need each time and discard leftovers: mixed clay dries out quickly and doesn't keep.

Safety

A brief pink flush after a clay masque is common and usually fades within the hour. If you feel burning, stinging or itching, rinse right away and stop using it. Avoid the eye area.

For external use only. Patch test any new product: apply a little to your inner forearm once a day for two days. If you notice redness, itching or swelling, rinse with cool water and stop using it. Keep out of reach of children. If you are pregnant, nursing or under a doctor's care, check with your doctor first.

Questions

Why can't I mix Argil with metal?

Argil is rich in minerals like iron and magnesium, and they react with metal. Use glass, wood or ceramic to keep it at full strength.

Can Argil go bad?

Dry, never. Keep it in an airtight container and it lasts forever. Mix only what you need each time, because mixed clay doesn't keep.

How often should I use it?

Once or twice a week as a full masque. As a spot masque, as often as you need.

Can I get it in chunks instead of powder?

Yes. Argil naturally comes in dry chunks. Email us and we'll send a sachet of chunks instead of powder.

From the Journal

The Clay From a Quarry With No Road →

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Pairs beautifully with

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Argil
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