Name: Beer Cleansing Bar
Brand: Nurtureholiks

What's inside

Ingredients Explained

Emollient

Palm kernel oil comes from the African oil palm fruit's outer pulp (different from palm oil). It is an emollient that creates a thin film on skin to smooth roughness and lock in moisture.

This oil has a fatty acid profile of mostly lauric (~42%), stearic, and oleic acid.

Overall, this ingredient works well for dry skin but it might be too heavy for oily or acne-prone skin.

Because it is rich in lauric acid, this ingredient may not be fungal acne (Malassezia folliculitis) safe.

Learn more about Elaeis Guineensis Kernel Oil

Butyrospermum Parkii Butter

Skin Conditioning

This ingredient is also known as shea butter. It is a plant-derived extract from the nuts of the Africa shea tree and one of the most well-studied emollients.

Because it has a high concentration of fatty acids (primarily oleic, stearic, and linoleic) it is able to form a protective barrier on the skin's surface. This helps seal in moisture and prevents transepidermal water loss (TEWL).

In vitro research found an increase in skin hydration by 58% and a decrease in TEWL by 37.8% after 24 hours of applying this ingredient (pretty impressive for a single ingredient!).

Besides hydration, shea butter also contains triterpenes that have anti-inflammatory potential. In particule, lupeol cinnamate has shown the highest anti-inflammatory activity in vivo.

Shea butter also contains vitamins A and E which may contribute to antioxidant activity.

While Shea Butter has an SPF rating of about 3-4, it is not a sunscreen replacement.

This ingredient may not be fungal acne safe because its fatty acids fall within the C11-C24 range that the Malassezia yeast can metabolize.

Learn more about Butyrospermum Parkii Butter

Ricinus Communis Seed Oil

Masking, Perfuming, Skin Conditioning

This ingredient is also known as castor oil. It is a skin conditioning ingredient.

The star component of castor oil is ricinoleic acid, an unusual fatty acid that makes up ~80-92% of its composition.

In skincare, it is an emollient that dries down to a solid film with water-binding properties. This helps keep skin hydrated and helps reduce transepidermal water loss (TEWL).

A 2026 dermatology review pulls together its broader uses:

Human clinical testing found this ingredient to be non-irritating and non-sensitizing.

Because castor oil contains fatty acids in the C11-24 range, this ingredient may not be fungal acne safe.

At this time, the literature does not support castor oil in regrowing hair. A 2022 systematic review found no strong evidence that it supports hair growth and only weak evidence that it improves hair shine.

Castor oil itself carries "perfuming" and "masking" function tags according to the official CosIng database. This is because of its mild odor and odor-dampening properties.

Learn more about Ricinus Communis Seed Oil

Beer

Skin Conditioning

We don't have a description for Beer yet.

Sodium Hydroxide

Buffering

Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.

In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline.

Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated.

"Alkaline" refers to a high pH level. A low pH level would be considered acidic.

Learn more about Sodium Hydroxide

Citrus Limon Fruit Extract

Masking, Skin Conditioning

Citrus Limon Fruit Extract comes from lemons. While lemon extract is exfoliating and antimicrobial, it can also cause skin sensitivity.

Lemons contains antioxidants, which may help with anti-aging. They are also rich in citric acid, an AHA.

And of course, lemons are rich in Vitamin C. Vitamin C helps with skin-brightening and increasing collagen production.

The acidity of lemons may work as an astringent for acne.

However, lemons can also cause skin sensitivity due to its limonene content. It can also increase photosensitivity, or sensitivity to the sun.

This ingredient is also used to add a lemon scent to products.

Learn more about Citrus Limon Fruit Extract

Nigella Sativa Seed Oil

Emollient, Perfuming, Skin Conditioning

This ingredient is also known as black seed oil or black cumin. It has emollient, skin conditioning, and perfuming properties.

It is rich in linoleic and oleic acids, making it a great skin hydrator or emollient. Other compounds found in black seed oil include thymoquinone, sterols, and various terpenes; these compounds give it antioxidant, anti-inflammatory, and antimicrobial properties.

Studies show thymoquinone helps reduce oxidative stress and dampens the inflammatory pathways. Combining this with the oils makes this ingredient great for barrier repair and moisturization.

Other studies have found this ingredient to have antimicrobial activity against several acne-causing bacteria.

Learn more about Nigella Sativa Seed Oil

Pinus Palustris Tar Oil

Masking, Tonic

Pinus Palustris Tar Oil is an oil.

Citrus Limon Peel Oil

Masking, Perfuming, Skin Conditioning

Citrus Limon Peel Oil is created from the peels of the lemon. It is used to add a lemon-scent to products. Lemon peel oil also has antibacterial, antifungal, and antioxidant properties. However, it may also cause phototoxicity and sensitize skin.

Lemon peel oil contains limonene, a skin sensitizing ingredient. Another component is furanocoumarin, which induces phototoxicity in skin.

Furanocoumarins bind and destabilize your DNA to increase the rate of sunburn.

Most reputable companies will remove furanocoumarins from their formulations.

Learn more about Citrus Limon Peel Oil

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