Bentonite Clay for Skin: Benefits and How to Use

Bentonite Clay Benefits

Stocksy/Design by Cristina Cianci

Not only for pottery purposes, clay is one of those surprisingly multipurpose ingredients that actually offers a host of different benefits, skincare ones included. These days, you're most likely to see it in purifying products geared toward oily and/or acne-prone skin, where it's often paired with what we think of as its cousin: charcoal. But what exactly is that clay doing for your skin?

Meet the Expert

Brooke Grant Jeffy, MD, is a board-certified dermatologist in Phoenix, AZ.

Fatima Fahs, MD, is a Michigan-based board-certified dermatologist and the creator of Dermy Doc Box.


Here, two board-certified dermatologists Brooke Grant Jeffy, and Fatima Fahs explain more about this ingredient's clay-m to skincare fame. See what we did there?

Bentonite Clay

Type of ingredient: Mineral-rich clay

Main benefits: Absorbs excess oil, exfoliates, offers anti-inflammatory properties.

Who should use it: Those with oily or acne-prone skin may find bentonite clay to be especially beneficial, though it can be too drying for those with dry or sensitive skin, says Fahs.

How often can you use it: This depends on the product you're using and your particular skin type, though usually weekly.

Works well with: Jeffy says it can be used with a variety of different ingredients—including tea tree oil, apple cider vinegar, and turmeric, just to name a few—for synergistic effects.

Don't use with: Since it can be drying in and of itself, be cautious about pairing it with other acne-fighting ingredients, such as acids or retinols, says Fahs.

What Is Bentonite Clay?

Well, for starters, it's not just any old type of clay. "It's mineral-rich and made of weathered volcanic ash," says Jeffy. Fun fact: While the original source of bentonite clay was the Montmorillon region of France, where it's been used on the skin for centuries, the term "bentonite" refers to the largest source of the clay today, Fort Benton, WY, she adds. (Field trip, anyone?) To the point, bentonite clay has a long and storied history. "It's been used for centuries as a traditional medicine for detoxification, because it contains minerals such as calcium, magnesium, and iron," says Fahs. "It was typically ingested to absorb and purify the body of toxins, and it's used in skincare for the same principles."

Benefits of Bentonite Clay for Skin

It's the detoxifying properties that really are bentonite clay's calling card, but it can do more than just that.

  • Absorbs excess oil: The clay's abilities to absorb excess oils make it ideal for those with acne-prone skin, says Jeffy.
  • Reduce the appearance of pores: The absorptive properties also means it has a temporary tightening effect on the skin and helps minimize the appearance of prominent pores, says Jeffy.
  • Has anti-inflammatory properties: Another boon for those battling breakouts, bentonite clay is naturally anti-inflammatory and can help calm inflammatory acne, explains Fahs. It's also sometimes used to soothe dermatitis and even diaper rash, adds Jeffy.
  • May have some anti-aging effects: To be fair, this isn't bentonite's claim to fame. However, "the minerals found in this clay may help protect the skin from UV-induced free radical damage that contributes to an aged appearance," says Jeffy. She also cites one study that found topical clay application to increase collagen production in rats; this may translate to some anti-aging effects in humans, she says.
  • Can mattify skin: If you're looking to reduce oily skin (especially before putting on makeup) using a bentonite clay product is especially helpful. It absorbs oil and can give the skin a matte look.

Side Effects of Bentonite Clay

As far as side effects go, topical use of bentonite clay is much less likely to cause any safety issues than ingestion of the ingredient, says Jeffy. That being said, sensitivity or a reaction is always possible. Do a small patch test on your inner forearm before applying all over your face, and if irritation occurs, discontinue use. And, broadly speaking, bentonite clay is best reserved for those with oilier skin, as it can prove to be too drying for anyone who has a dryer complexion to begin with.

How to Use It

There are plenty of products that contain bentonite clay, given that it does play nicely with a wide array of different ingredients. You can also easily purchase straight-up bentonite clay powder and go the DIY route, though Fahs warns that it's important to pay attention to what you're buying. "There's no FDA regulation on how this clay is sourced and what other contaminants it may contain, such as heavy metals or pesticides. This is why although there are many ways to purchase bentonite clay powder in bulk for very cheap, one should tread carefully," she says. Do your research to find out where the clay is coming from, whether it's been checked for purity, etc.

The Best Products With Bentonite Clay

Skinceuticals
Skinceuticals Clarifying Clay Masque $59
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Both derms recommend this heavy-duty, pore cleansing mask. "Alpha hydroxy acids in the formula enhance bentonite's clay exfoliating effects, and it also contains chamomile to help soothe inflammation," says Jeffy. Also nice: It never gets super hard or cracked as it dries.

cetaphil
Cetaphil Pro Dermacontrol Purifying Clay Mask $9
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One of Fahs's picks, this affordable mask pairs bentonite clay with kaolin clay (another mineral-rich version) for maximum purifying and oil absorption. Bonus points for the fact that it's fragrance-free and hypoallergenic, a boon for those whose skin is both oily and on the sensitive side.

Aztec Secret
Aztec Secret Indian Healing Clay $8
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If you're looking for straight-up bentonite clay because you want to take matters into your own hands, this is one of the most popular options out there, somewhat of a cult classic. Sourced in the USA, it contains only 100% pure bentonite clay, which can be used any which way. FYI, the directions suggested mixing it with apple cider vinegar (which makes for a less clumpy effect than if you mix it with water), which is fine, though Fahs notes that this can increase the likelihood of irritation, so proceed with caution.

Tula
Tula Detox In a Jar Exfoliating Treatment Mask $48
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"I like this mask because it combines bentonite's acne-fighting and oil-controlling benefits with turmeric and probiotics to help further reduce inflammation," explains Jeffy. There's also lactic acid in the mix for some gentle exfoliation, making this a great formula to reach for whenever your skin needs a little extra brightening boost.

Indie Lee
Indie Lee Overnight Banish Gel $19
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If you want to use bentonite clay as a strategic spot treatment rather than in a full face mask, try this guy. Bentonite and kaolin clays help pull out oil, while salicylic acid further helps unclog pores. Additional ingredients—tasmanian pepper fruit and burdock root—tamp down redness, making this an effective way to quell pesky pimples overnight.

Caudalie Instant Detox Mask
Caudalie Instant Detox Mask $39
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This mask is a fan favorite of pretty much anyone who's ever tried it (just check out the many glowing reviews floating around the internet) as well as a go-to for Fahs. Bentonite is the second ingredient listed, so you know you're getting an effective amount of it. The fast-acting formula (it works in just five to 10 minutes) purifies the skin, removing not only oil and dirt but also environmental toxins, all while leaving your complexion beautifully radiant.

FAQ
  • Can I use bentonite clay every day?

    Bentonite clay is typically used as a weekly treatment. Daily use could potentially be too drying for the skin.

  • Does bentonite clay shrink your pores?

    If you're looking to reduce the look of the size of your pores, bentonite clay is a great option. Its oil absorption properties help tighten the skin and temporarily reduce the look of prominent pores.

  • Is bentonite clay good for treating blackheads?

    Since bentonite clay can help "un-gunk" your skin of oils, dirt, and other impurities, it's also a great option for removing blackheads.

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