Multani mitti is a traditional oil-absorbing clay that some people with oily skin use as an occasional mask. We found no trial that tested it on acne, so this guide separates what it plausibly does from what nobody has shown. Also called Fuller's Earth, it has been mixed with water and worn as a face mask for generations.
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No trial has tested multani mitti on acne. The nearest evidence we read is a 2023 study of a different clay mask, completed by 60 adults, with no comparison group and manufacturer funding.
Multani mitti absorbs surface oil, which is why oily and combination skin use it as a weekly mask. It has not been shown to clear breakouts, fade acne marks or repair scars.
Mix about 1 teaspoon with water, rinse while still slightly tacky, and use it once or twice a week. The AAD says a mask applied too often can leave skin feeling worse.
Skip it if your skin is dry or sensitive, wash it off if it itches, burns or stings, and see a dermatologist for deep, painful or worsening acne.
What Does Multani Mitti Do on Oily, Acne-Prone Skin?
It absorbs surface oil, and that is the only thing we can say it does with confidence. Multani mitti is a naturally absorbent clay, and our product page places it at the strong-absorber end of the clay range, best suited to oily and combination skin.
The American Academy of Dermatology (AAD) lists clay, “like kaolin or bentonite, to help absorb oil and soothe irritation,” among the facial mask ingredients for oily or acne-prone skin. The page does not name multani mitti, and an ingredient list is not evidence that a clay clears breakouts.
We found no trial of multani mitti on acne, so we do not claim it changes breakouts. We also could not find sources for the mechanism and bacteria-fighting claims you may see elsewhere, so this guide leaves them out.
What Does the Research Show?
We found no clinical trial of multani mitti itself for acne, so the nearest evidence is on clay masks in general. In a 2023 study in Skin Research and Technology, 60 adults with oily or combination skin completed 4 weeks of twice-weekly use of a commercial mask made with kaolin and bentonite plus other ingredients. Among the 40 assessed clinically, a blinded dermatologist counted 46.44% fewer closed comedones and 65.77% fewer open comedones by week 4, and skin-oiliness readings fell 29.90%. The study had no comparison group and was funded by L'Oréal, whose La Roche-Posay brand makes the mask, and it tested a finished product rather than multani mitti, so treat it as encouraging, not conclusive. Clay minerals are also widely used in cosmetics as adsorbents or absorbents, according to a 2017 review in the International Journal of Pharmaceutics.
We also found no head-to-head trial of multani mitti against standard acne treatments. The American Academy of Dermatology says acne treatment should match the type of blemish, and that deep, painful acne needs a dermatologist’s help, so consider a clay mask an optional extra for oil control, not a substitute for that care.
The takeaway: no trial has tested multani mitti on acne, and the one clay-mask study we read was small, uncontrolled and manufacturer-funded. Treat multani mitti as an optional oil-absorbing mask, not an acne treatment.
How to Use Multani Mitti for Acne: Step-by-Step
Mix about 1 teaspoon of multani mitti with enough water or rose water to make a paste, apply a thin layer, and rinse while it is still slightly tacky. Use it once or twice a week at most. Here is the method:
- Patch-test first: Test a small amount on a small area of skin before using it on your face, as the AAD advises for any new facial mask, and check for redness or irritation.
- Mix your mask: Combine about 1 teaspoon of Multani Mitti Clay with enough water or rose water to form a smooth, spreadable paste. Use a non-metal bowl and spoon.
- Apply to clean skin: Wash your face with a gentle cleanser first. Spread a thin, even layer over clean skin, avoiding the eye area, lips, and any broken or actively inflamed skin.
- Watch the timing: Leave the mask on until it is dry to the touch but still slightly tacky, and do not let it dry to a hard crack. An AAD page quotes a dermatologist warning that leaving a facial mask on longer than intended can cause irritation.
- Rinse gently: Rinse with lukewarm water and pat dry. If you feel itching, burning or stinging at any point, wash the mask off straight away, as the AAD advises.
- Moisturize if needed: Follow with a light moisturizer, or a few drops of a rosehip face oil, if your skin feels tight.
Frequency: Start with once a week and use it no more than twice a week, as our product page advises. The AAD says a mask applied too often can leave your skin feeling worse.
Who Should Use Multani Mitti, and Who Should Skip It?
Oily and combination skin is who it is sold for, and dry or sensitive skin should skip it. Our own product page calls it the wrong clay for dry or sensitive skin.
- Oily skin: The skin type it is sold for. Treat it as a weekly step and an optional extra, not a treatment.
- Combination skin: Apply it only where you get oily, such as the T-zone, and keep it off drier areas.
- Sensitive or dry skin: Skip it. Our product page points dry or sensitive skin to kaolin or Rhassoul Clay instead, and describes rhassoul as a medium-absorbency clay. We found no trial comparing the two on acne.
- Anyone whose skin reacts: The AAD notes that a mask with irritating ingredients, or one applied too often, can leave your skin feeling worse. Stop if that happens.
Engineer-vetted, no fillers
Multani Mitti Clay
100% pure Fuller's Earth — no talc, no fragrance, no fillers. The unblended clay sourced and sold at the Sampson Standard.
Shop now → ✓ 30-day money-back guarantee · Free shipping over $75Does Multani Mitti Work on Acne Scars?
We found no evidence that it does. We searched for research linking multani mitti or Fuller's earth to acne marks (post-inflammatory hyperpigmentation), scars or dark spots and found nothing on skin marks, so we do not claim it fades them.
Depressed (atrophic) scars, the textural pitting caused by collagen loss, are a structural skin change, and we found no evidence that a topical clay can repair them. For pitted scarring, consult a dermatologist about your options.
When Should You See a Professional?
A clay mask is at most an optional extra for oily skin, so consult a dermatologist or healthcare professional if:
- Your acne is severe, cystic, or nodular (deep, painful, under the skin)
- Breakouts are worsening despite a consistent skincare routine
- You suspect a hormonal driver (cystic jaw/chin acne in adult women)
- You have significant scarring or are developing scarring rapidly
- Your skin itches, burns or stings after a mask, or over-the-counter approaches, including clay masks, are not helping
This content is for informational purposes only and is not medical advice. Individual results may vary.
Frequently Asked Questions
Is multani mitti good for acne?
We can't say it is, because no trial has tested multani mitti on acne. It absorbs surface oil, which is why people with oily skin use it as a weekly mask, and the nearest evidence we read is one uncontrolled study of a different clay mask. Treat it as an optional extra, not an acne treatment.
Does multani mitti remove acne scars?
We found no research showing that multani mitti removes or fades acne scars or marks. A dermatologist can advise on pitted scars and dark marks.
How often should I use multani mitti on acne-prone skin?
Start with once a week and use it no more than twice a week, as our product page advises. The AAD says a mask applied too often can leave skin feeling worse, so stop if you feel itching, burning or stinging.
Can I leave multani mitti on overnight?
No. Rinse it off while it is still slightly tacky. An AAD page quotes a dermatologist warning that leaving a facial mask on longer than intended can cause irritation, and overnight is far longer than a mask is meant to stay on.
Is multani mitti better than bentonite clay for acne?
We found no research comparing them, so we can't recommend one over the other. The AAD names kaolin and bentonite, not multani mitti, among clays for oily or acne-prone skin. See our Rhassoul vs Bentonite guide for a clay comparison.
Multani mitti vs Rhassoul clay — which is better for acne?
Our product pages point oily skin to multani mitti and dry or sensitive skin to rhassoul, but we found no trial comparing them for acne. See our side-by-side comparison for how they differ.