Name: Unscented Stone Body Moisturizer Lotion Bar
Brand: Kate McLeod

What's inside

Ingredients Explained

Emollient, Masking, Skin Conditioning

This ingredient is also known as Cocoa butter; it's the fat pressed out of roasted cocoa beans.

Cocoa butter is solid at room temperature and melts right around body temperature, which is why it feels waxy in the jar and slippery on skin.

It has a very saturated profile (stearic acid ~34 to 36%, oleic acid ~30 to 40%, and palmitic acid ~24 to 29%) that makes it a strong occlusive: it sits on top and slows water escaping from skin.

Concentration data shows that it can show up anywhere from a few percent in lotions up to 100% in balms, and the FDA lists cocoa butter as an OTC skin protectant active at 50-100%.

The CIR has reviewed it and concluded it to be safe as used in cosmetics.

This is one of the ingredients with a comedogenic score of 4/5 from the rabbit ear test. Just know that a later human study did find that finished products containing high-comedogenic ingredients like cocoa butter did not increase microcomedone formation.

The fair call here is that this ingredient is most likely fine on body or low-percentage formulas, but can potentially be riskier as a heavy leave-on facial product if you break out easily.

Cocoa butter may not be fungal acne safe; it is a triglyceride of C16-18 fatty acids that the Malassezia yeast can metabolize.

Allergies to cocoa butter are rare and uncommon, but a few cases have been documented (mostly in cases where the person ate chocolate). So if you have a tree nut allergy, be sure to patch test or avoid.

Learn more about Theobroma Cacao Seed Butter

Prunus Amygdalus Dulcis Oil

Skin Conditioning

This ingredient is also known as sweet almond oil. It is a lightweight, cold-pressed oil from the ripe seeds of the sweet almond tree.

Sweet almond oil is rich in skin-nourishing fatty acids such as oleic acid (55-86%) and linolenic acid (7-35%).

As an emollient, it softens and hydrates skin by forming a thin barrier that locks in moisture.

Clinical studies have found it to be non-irritating and non-sensitizing. The CIR Expert Panel has evaluated the available safety data and concluded it is safe for topical use.

Because of the oleic acid content, this ingredient may not be fungal acne safe.

Learn more about Prunus Amygdalus Dulcis Oil

Prunus Armeniaca Kernel Oil

Masking, Skin Conditioning

This ingredient is the oil from the apricot.

Apricot Kernel Oil is an emollient and helps soften skin. This is due to its fatty acid components. Some of these fatty acids include linoleic and oleic acid.

This ingredient also has antioxidant properties from Vitamins A, C, and E. Antioxidants help fight free-radicals. Free-radicals are molecules that may damage your skin cells. Besides being antioxidants, these vitamins provide plenty of skin benefits as well.

Learn more about Prunus Armeniaca Kernel Oil

Persea Gratissima Oil

Skin Conditioning

This ingredient is also known as Avocado oil. It's the cold-pressed oil from the flesh of the avocado fruit packed with fatty acids (mostly oleic acid).

The rich fatty acid profile allows it to function as a skin conditioning agent and emollient; it helps soften and smooth skin while reducing water loss.

Preclinical research has found that topical avocado oil increased collagen synthesis and reduced inflammation during wound healing, giving it some skin-repairing credibility.

The unsaponifiable fraction of the oil is also interesting: studies on avocado unsaponifiables showed that it helped skin produce more collagen and other structural compounds that support healing.

The CIR Expert Panel has found this ingredient to be non-irritating in formulations.

It's a great ingredient for dry or compromised skin. Just know it may not be fungal acne safe. This is because the oleic acid content falls within the range that Malassezia can use as a food source.

Learn more about Persea Gratissima Oil

Cocos Nucifera Oil

Masking, Perfuming, Skin Conditioning

This ingredient is also known as coconut oil. It is a plant-derived ingredient with skin conditioning properties.

The fatty acid profile of coconut oil is mostly lauric acid (~54%), followed by capric, caprylic, palmitic, and myristic acids. This profile allows it to penetrate easily into skin, moisturize, and improve dry skin.

A double-blind study confirmed that extra virgin coconut oil is as effective as mineral oil for treating very dry skin. Another study found it outperformed mineral oil for mild to moderate atopic dermatitis in children.

Another study from 2018 found that virgin coconut oil can soothe inflammation and boost key skin barrier proteins. Just know this evidence is still only from lab settings and not human trials.

It has also been shown to reduce Staphylococcus aureus, a bacteria that commonly overgrows in people with eczema.

Clinical testing shows very minimal skin irritation and no evidence of sensitization or phototoxicity.

Coconut oil gets flagged as a "fragrance" because it has a natural mild scent (not because it's a synthetic perfume). The European Cosmetic ingredient database also lists "perfuming" as a function of this ingredient.

Just so you know, the term "fragrance" is completely unregulated. Some brands still use botanical extracts or essential oils in their "fragrance-free" formulas, but regulatory databases technically classify these under "fragrance".

Coconut oil has a tiny and useless bit of natural SPF. Early lab studies clocked it around SPF 7-8 but a more recent study found the real number closer to SPF 1.2. It also offers no meaningful UVA protection (SPF only overs UVB rays).

The comedogenic rating of 4/5 means it has a high potential to clog pores; but it's worth noting that comedogenicity is highly individual and ratings cannot predict how an overall formula will behave on skin.

Since lauric acid is the dominant fatty acid, this ingredient may not be fungal acne safe. The Malassezia yeast feeds on fatty acids with carbon chain lengths between 11-24, and lauric acid falls within these lengths (C12).

Learn more about Cocos Nucifera Oil

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