Overview
What it is
Hair mask with 19 ingredients
Cool Features
It is cruelty-free and reef safe
Suited For
It has ingredients that are good for dry skin, sensitive skin, oily skin and dark spots
Free From
It doesn't contain any harsh alcohols, common allergens, parabens, silicones or sulfates
Fun facts
One 'N Only is from United States.
We independently verify ingredients and our claims are backed by peer-reviewed research. Does this product need an update? Let us know.
What's inside
Ingredients List
Water
Skin ConditioningCetyl Alcohol
EmollientBehenalkonium Chloride
Propylene Glycol Ceteth-3 Acetate
EmollientParfum
MaskingTridecyl Stearate
EmollientNeopentyl Glycol Dicaprylate/Dicaprate
EmollientTridecyl Trimellitate
EmollientDisodium EDTA
Hydrolyzed Keratin
HumectantArgania Spinosa Kernel Oil
EmollientMagnesium Nitrate
Butylene Glycol
HumectantAcetic Acid
BufferingMethylchloroisothiazolinone
PreservativeMethylisothiazolinone
PreservativePhenoxyethanol
PreservativeMagnesium Chloride
Ethylhexylglycerin
Skin ConditioningWater, Cetyl Alcohol, Behenalkonium Chloride, Propylene Glycol Ceteth-3 Acetate, Parfum, Tridecyl Stearate, Neopentyl Glycol Dicaprylate/Dicaprate, Tridecyl Trimellitate, Disodium EDTA, Hydrolyzed Keratin, Argania Spinosa Kernel Oil, Magnesium Nitrate, Butylene Glycol, Acetic Acid, Methylchloroisothiazolinone, Methylisothiazolinone, Phenoxyethanol, Magnesium Chloride, Ethylhexylglycerin
Benefits
Concerns
Ingredients Explained
Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.
So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Remember to stay hydrated!
Learn more about WaterCetyl Alcohol is a fatty alcohol. Fatty Alcohols are most often used as an emollient or to thicken a product.
Its main roles are:
Though it has "alcohol" in the name, it is not related to denatured alcohol or ethyl alcohol.
The FDA allows products labeled "alcohol-free" to have fatty alcohols.
Learn more about Cetyl AlcoholWe don't have a description for Behenalkonium Chloride yet.
We don't have a description for Propylene Glycol Ceteth-3 Acetate yet.
Parfum is a catch-all term for an ingredient or more that is used to give a scent to products.
Also called "fragrance", this ingredient can be a blend of hundreds of chemicals or plant oils. This means every product with "fragrance" or "parfum" in the ingredients list is a different mixture.
For instance, Habanolide is a proprietary trade name for a specific aroma chemical. When used as a fragrance ingredient in cosmetics, most aroma chemicals fall under the broad labeling category of “FRAGRANCE” or “PARFUM” according to EU and US regulations.
The term 'parfum' or 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term.
For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance by INCI standards.
One example is Calendula flower extract. Calendula is an essential oil that still imparts a scent or 'fragrance'.
Depending on the blend, the ingredients in the mixture can cause allergies and sensitivities on the skin. Some ingredients that are known EU allergens include linalool and citronellol.
Parfum can also be used to mask or cover an unpleasant scent.
The bottom line is: not all fragrances/parfum/ingredients are created equally. If you are worried about fragrances, we recommend taking a closer look at an ingredient. And of course, we always recommend speaking with a professional.
Learn more about ParfumTridecyl Stearate isn't fungal acne safe.
We don't have a description for Neopentyl Glycol Dicaprylate/Dicaprate yet.
Tridecyl Trimellitate is a synthetic ingredient with emollient and skin conditioning properties. It also acts as a texture enhancer and helps products spread easily without feeling greasy.
As an emollient, it forms a light layer on the skin that keeps moisture in and improves water resistance. This is why you'll often find this ingredient in eye creams and other rich treatments.
This ingredient is seen as the elegant alternative to mineral oil.
Learn more about Tridecyl TrimellitateDisodium EDTA is a chelating agent. It grabs onto and deactivates metal ions that sneak into your products from water, packaging, or air.
This ingredient mainly works behind the scenes and helps with:
On top of that, this ingredient can counteract the effects of hard water by binding to the minerals in it.
One thing worth knowing is that Disodium EDTA has been shown to be a mild penetration enhancer. It can help other ingredients absorb into skin more effectively which can be a double-edged sword (great for actives, but can also make the active too strong if you have sensitive skin).
Clinical patch testing showed no significant skin irritation at typical use concentrations and minimal dermal absorption.
You'll most likely see this ingredient near the end of an ingredient list. It's typically found in concentrations less than 1%.
Learn more about Disodium EDTAHydrolyzed Keratin is derived from keratin. Keratin is a large protein that is naturally found in our hair and skin.
Studies show keratin is able to seal broken hair cuticles, helping to prevent split ends and breakage.
As a humectant, hydrolyzed keratin helps draw moisture from the air to your hair and skin. This helps keep your skin and hair hydrated.
Learn more about Hydrolyzed KeratinYou may know this ingredient as argan oil. It has emollient and skin conditioning properties that help soften skin and reinforce the lipid barrier.
The fatty acid profile of argan oil is roughly 45-55% oleic acid, 28-36% linoleic acid, 10-15% palmitic acid, and 5-7% stearic acid. It also contains vitamin E, sterols, squalene, and polyphenols like ferulic acid.
Two clinical studies in postmenopausal women found that applying argan oil for 60 days significantly improved skin elasticity and moisturization (reduced transepidermal water loss and increased epidermal water content).
Since it is high in oleic and linoleic acid, this ingredient may not be fungal acne safe. Both of these fall in the C11-C24 range that Malassezia yeast can metabolize.
Learn more about Argania Spinosa Kernel OilWe don't have a description for Magnesium Nitrate yet.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.
Learn more about Butylene GlycolAcetic Acid is created during the process of fermenting ethanol. It is used to help adjust the pH of cosmetics.
The pH of your skin is important to maintaining a healthy barrier. This barrier keeps your skin hydrated and protects your skin from external factors such as bacteria.
Methylchloroisothiazolinone, or MCI, is a synthetic preservative used to protect against the growth of bacteria, yeasts, and fungi in water-based products.
MCI is commonly combined with methylisothiazolinone (MI) in a 3:1 ratio.
This ingredient is safe in cosmetics when formulated to be non-sensitizing and concentrations must not exceed 7.5 ppm in leave-on products / 15 ppm in rinse-off products.
Unfortunately, this ingredient has a well-documented sensitization story. Studies spanning several decades have shown this ingredient + MI to cause skin irritation and allergies.
The use of this ingredient varies around the world:
This just means this ingredient is most likely non-sensitizing in rinse-off products unless you've been diagnosed with a contact allergy to isothiazolinones.
Learn more about MethylchloroisothiazolinoneMI is a preservative and known skin irritant. In the past, MI was used for its ability to prevent bacteria, yeast, and fungi growth in low doses.
Nowadays, you'll most likely see MI combined with Methylchloroisothiazolinone (MCI).
Since then, numerous studies have shown this ingredient to cause contact dermatitis, or skin irritation.
The use of this ingredient varies around the world:
Learn more about MethylisothiazolinonePhenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.
It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.
Magnesium chloride is a mineral salt made from magnesium and chloride. It is mainly used to control product stability and texture in cosmetics.
This ingredient can also play a role in soothing the skin and supporting normal skin function.
Magnesium chloride is water-soluble, generally well tolerated, and does not act as a strong “active” ingredient on its own.
Learn more about Magnesium ChlorideEthylhexylglycerin is created from glycerin. It is a multitasker ingredient that:
The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure to patch test if you are unsure.
Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations.
Learn more about EthylhexylglycerinReviews
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Where it's from
One 'N Only is a American brand
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We're dedicated to providing you with the most up-to-date and science-backed ingredient info out there.
The data we've presented on this page has been verified by a member of the SkinSort Team.
Read more about us· Published January 2, 2025 • Added by BlackCat808