8 Black Walnut Hull Benefits: Skin Conditions, Acne, Warts, Candida and More

Black walnut hulls are natural remedy with many beneficial properties. They have been used by traditional cultures like Native Americans for centuries for a wide variety of ailments.

Modern scientific research has only recently identified some of the unique nutritional elements found in the potent green husks surrounding black walnut shells.

Here are 8 different ways that you can use concentrated extracts made from green black walnut hulls for a variety of different conditions. Also ahead, timing, potential side effects, and the best black walnut hull tincture and capsules in 2026.

8 Beneficial Effects of Black Walnut Hulls

Black walnut tinctures are a well known parasite cleanse. The outer hulls of this nut are rich in iodine, tannins, and special compounds like juglone that work against intestinal worms and other parasitic organisms.

Beyond their anti-parasitic benefits, black walnut hulls have strong antifungal, antibacterial, antimicrobial and anti-inflammatory properties. They are also beneficial for digestive health and detoxification, along with several other unusual uses covered ahead.

1. Natural Remedy for Acne and Other Skin Conditions

Black walnuts hull extracts are astringent and antiseptic, and were traditionally used for acne, skin infections, wound healing and treating other skin problems like eczema and psoriasis.

For acne problems an extract of the green hulls, like this high-potency one I get, is taken both internally and sometimes applied diluted externally as a skin treatment.

If applying extracts to your skin, it’s important to patch test them first to asses your own sensitivity. To do this, mix a few drops in warm water and dab a small area in an inconspicuous part of your face with a cotton ball. Leave it for an hour or two to see if you have any negative reaction before using it on the rest of your face.

There are also many reports online of success with taking an extract of black walnut’s green hulls internally for eczema and psoriasis. Alcohol-based tinctures would generally be too harsh and astringent to apply topically for these skin conditions though.

2. Black Walnut Extract for Warts

Warts are growths on the skin caused by a viral infection. Regular topical application of green black walnut hull extract is often reported to make warts shrivel up and die over time.

For wart treatment, black walnut hull drops are applied undiluted directly to the wart daily, preferably several times a day, and covered with tape or a band-aid. Be careful during application as black walnut tinctures can stain clothing.

Visible results usually take several weeks, but many people find their warts start to shrink and eventually die and fall off with this treatment.

There have also been cases discussed on Reddit and in other online health forums of multiple warts shrinking and then disappearing after regularly taking black walnut extract internally.

3. Controls Candida

Like intestinal worms, candida overgrowth is another common, yet rarely diagnosed and debilitating problem affecting many people.

Most people have some candida albicans yeast in their digestive systems. Problems start though when intestinal conditions deteriorate with a diet high in simple sugars, prolonged stress and especially antibiotic use.

Intestinal candidiasis is an overgrowth of the candida fungus, which weakens the walls of your intestines and can release toxins into your bloodstream. This plays havoc with your immune system and can manifest in a whole range of baffling symptoms which can be difficult for doctors to diagnose.

Studies on compounds found in black walnut extract have shown it to be as effective against candida as commercial antifungal treatments. Naphthoquinone juglone, high levels of astringent tannins and other compounds in black walnut hull supplements can change the intestinal environment to make it unfavorable for the candida albicans fungus.

If you’d like to try black walnut for candida prevention, get a high-strength brand like this one made from fresh green hulls. Take a dropperful three times a day in a glass of water on an empty stomach for best results.

4. Antifungal Effects

The same antifungal properties that work for candida also make black walnut hull tinctures a popular treatment for athlete’s foot, ringworm, jock itch and other fungal infections of the skin.

To treat these fungal skin conditions the tincture can be applied externally to the affected areas and is often reported in online forums as highly effective.

Always patch test any preparations like this on a small area of skin, preferably your inner arm, for several hours first before using them on larger areas to check for sensitivity or allergic reaction.

5. Fights Parasites

Black walnuts, and in particular their outer hulls that are harvested green, are a well known vermifuge in herbal traditions. They are considered a premier treatment for pinworms, tapeworms, hookworms and other intestinal parasites.

There’s much more on how to use black walnut hulls for parasites here, along with two other effective anti-parasitic herbs to use it in conjunction with it.

6. Improves Digestion

Alongside its powerful anti-parasitic and anti-fungal properties for your gastrointestinal tract, black walnuts have other beneficial effects on your digestive system.

An extract of the hull is used to tone and heal inflamed intestinal tissue, as well as improving the environment of the digestive tract for more effective assimilation and elimination. It’s for this reason that the tincture is considered a treatment for both constipation and diarrhea.

7. Treats a Sore Throat

You can gargle with black walnut tincture diluted in water to treat a sore throat. Once again, the astringent tannins and naturally antiseptic iodine provide the beneficial effects.

Gargling black walnut extract in water works best for a sore throat when it’s used early on at the first sign of discomfort.

8. Stops Sweating

In one of the more unusual benefits of black walnut, it is known to help reduce excessive sweating.

The high levels of astringent tannins contained in the hulls have an effect on overactive sweat glands and decrease the amount of sweat they produce.

Best Black Walnut Hull Extract

There are many different kinds of black walnut hull liquid drops, tinctures and extracts available in 2026. I’ve examined almost all of them and the best one I’ve found and used myself is made by Herb Pharm, a decades old American herbalists brand known for their potent extracts.

Herb Pharm says on their website this black walnut hull tincture is made from “fresh, unripe green outer hull of Juglans nigra trees which are responsibly wildcrafted by hand each summer in Kentucky.”

If you’d like to try this highly concentrated extract yourself it’s here on Amazon for less than the Herb Pharm site. The 4 ounce bottle works out better value and lasts for several months. Ideally take a full dropper before meals in a big glass of water.

Best Value Black Walnut Hull Capsules

While tinctures made from black walnut hulls are generally considered stronger, they are usually more expensive and are often made with alcohol and glycerin, which some customers understandably choose to avoid. Capsules make from black walnut hull powder are a popular alternative and convenient to take regularly.

Nutricost make good value black walnut hull capsules with 120 pills in the bottle for under $10. They say each capsule is equivalent to 4,000 mg of black walnut (Juglans nigra) hull and you can find them here on Amazon.

I take a lot of Nutricost products myself and this brand is well known for making all their supplements in their own GMP-certified America facility and third party safety testing everything they sell.

Possible Side Effects of Black Walnut Hulls

It’s better to start of slow with potent natural remedies like black walnut hull extracts, powders and capsules. While their natural iodine, astringent tannins and compounds like juglone have positive benefits for many people, some do experience negative side effects, especially at higher doses.

Stomach upsets, nausea and digestive side effects, such as intestinal cramps and even diarrhea have been reported. Taking just a few drops of black walnut hull extract the first time you use it is recommended to assess your tolerance and check for a bad reaction.

Always take herbal products like this well away from important prescriptions and consult your doctor before using black walnut extracts if you are being treated for any serious conditions.

Allergic reactions to black walnut products are rare but do occur. If you experience symptoms like throat swelling or sudden itching soon after taking a herbal supplement like this then seek medical advice and discontinue using it.

With topical applications of black walnut hull oil or tinctures it’s important to patch test first on a small area before applying it to large areas, or especially inflamed skin.

Using Black Walnut Supplements

Have you tried using green black walnut hull extracts or tinctures for skin conditions like acne, warts and fungal infections? Or black walnut hull capsules for digestive health, candida and detoxification?

I’d appreciate hearing how this natural remedy worked for you and any benefits or side effects you experienced in the comments below. Next is a deeper look at how to use black walnut hulls for parasites and intestinal worms.