Bentonite Clay

Cosmetic-grade sodium bentonite clay (INCI: Bentonite), a fine, light grey to beige powder formed from volcanic ash. Bentonite swells and thickens when mixed with water and is highly absorbent, which makes it a popular clay for oil-absorbing face masks, clarifying hair masks and as a natural thickener in formulations.

At a glance

• INCI: Bentonite
• Type: Sodium bentonite
• Appearance: Fine light grey to beige powder
• Sizes: 100g, 200g, 500g. For 1kg and larger, see Bentonite Clay Wholesale
• Documentation: COA and SDS available on request

Why formulators use it

• Highly absorbent: Takes up excess oil, which suits masks for oily and combination skin.
• Swells and thickens: Builds body in masks, scrubs and some water-based products.
• Versatile: Used in face masks, hair masks, scrubs, soaps and bath products.

Suggested usage rates

• Face masks (powder mix): 20 to 50%, with water or hydrosol
• Ready-made clay masks: 5 to 20%
• Thickener in water-based formulas: 1 to 5%
• Soap: about 1 teaspoon per 500g of oils

How to use it

• Face mask: Mix 1 part clay with 2 parts water or Rose Hydrosol into a smooth paste. Apply, leave for 10 minutes, and rinse before it dries completely.
• Hair mask: Mix into a thin paste, apply to the scalp and lengths, leave for 10 to 15 minutes, then rinse well.
• Formulation: Disperse slowly into water while stirring, and allow time to hydrate.

Frequently asked questions

How do I mix bentonite clay?
Add the clay to the liquid, not the other way around, and stir until smooth. A plastic, glass or wooden bowl and spoon are easiest to clean.

Should I let the mask dry completely?
Rinse it off while it is still slightly damp. Letting it dry fully can leave skin feeling tight.

Is bentonite clay good for oily skin?
It is one of the most absorbent clays, which is why it is popular in masks for oily and combination skin. For sensitive or dry skin, try Kaolin Clay instead.

Can I eat bentonite clay?
No. This is a cosmetic-grade clay for external use only.

Do you sell bulk bentonite clay?
Yes. 1kg to 20kg sizes are on our Bentonite Clay Wholesale page.

Making a bentonite clay mask for your skin type

The basic mask is clay plus liquid, mixed in a glass, plastic or wooden bowl rather than metal. Change the liquid to suit your skin:

• Oily skin: mix with water or Rose Hydrosol and leave on for 5 to 10 minutes.
• Normal or combination skin: use equal parts water and Aloe Vera Gel for a softer, creamier paste, or apply it only to the T-zone.
• Drier skin: blend half and half with Kaolin Clay and add a few drops of carrier oil.

How often: once or twice a week for oily skin, and once a week or less for normal or drier skin.

Rinse it off while it is still slightly damp, before it fully cracks. If skin feels tight afterwards, use it less often or shorten the time.

Pairs well with

Kaolin Clay, Pink Australian Clay, Rose Hydrosol and Aloe Vera Gel.

Storage

Keep tightly sealed in a cool, dry place to stop it absorbing moisture and clumping.

For external use only. Patch test before use. This product is a cosmetic ingredient and is not intended to diagnose, treat, cure or prevent any disease.