Sooryehan The Black Essence Moisturizer

Sooryehan The Black Essence Moisturizer
8.0
/ 10
Moisturizing
10.0 Humectancy icon Humectancy
5.9 Occlusivity icon Occlusivity
2Anti-wrinkle icon/ 10
Anti-wrinkle
Rich
in Antioxidants

Review

Results you may expect from using Sooryehan The Black Essence Moisturizer:

Based on the ingredient analysis by CreamScan, these are the key benefits you can expect from using Sooryehan The Black Essence Moisturizer:

  • Intense moisturizing. It has a moisturizing rating of 8.0 out of 10.
  • Some anti-wrinkle efficacy: Sooryehan The Black Essence Moisturizer has an anti-wrinkle rating of 2.0 out of 10 so you may expect some, although limited, effect on wrinkles.
  • Antioxidant protection.

How moisturizing is it?

Intensely moisturizing: Sooryehan The Black Essence Moisturizer has a moisturizing rating of 8.0 out of 10.

Is it more humectant or occlusive? Significantly more humectant. It has a maximum humectancy of 10 out of 10, primarily due to the substantial concentration of Glycerin (est. ≈6.0%) and Butylene Glycol (est. ≈4.0%), and a moderate occlusivity of 5.9 out of 10, mainly due to the high content of Dimethicone (est. ≈9.0%) and Triethylhexanoin (est. ≈2.5%).

Please refer to the Ratings section below for details of the moisturizing rating calculation.

Anti-wrinkle efficacy

According to CreamScan analysis, Sooryehan The Black Essence Moisturizer has a slight anti-wrinkle rating of 2.0 out of 10. It contains one ingredient with proven anti-wrinkle efficacy: Niacinamide (est. ≈1.3%), 
 one of the most effective and well-researched anti-wrinkle ingredients.
 
Among others, Sooryehan The Black Essence Moisturizer also contains Adenosine, an ingredient marketed as effective in reducing wrinkles. However, the studies supporting the anti-wrinkle claims of Adenosine provide insufficient evidence of its efficacy according to CreamScan Research Evaluation Standards. Therefore, this ingredient does not contribute to the anti-wrinkle rating.
 
Moisturizers, when used regularly, are proven to prevent wrinkle formation and even reduce existing wrinkles. Therefore, this product, like any other moisturizer, could deliver additional anti-wrinkle efficacy through its moisturizing action.
 

Please refer to the Ratings section below for details of the anti-wrinkle rating calculation.

Antioxidant benefits

We estimate that Sooryehan The Black Essence Moisturizer is rich (> 3%) in antioxidants, specifically Niacinamide (est. ≈1.3%), Hyaluronic Acid (est. ≈0.3%), Hydrolyzed Hyaluronic Acid (est. ≈0.3%), and others.

A key benefit of antioxidants is their ability to reduce oxidative stress caused by free radicals and therefore prevent accelerated skin aging. Studies also show that antioxidants can protect against environmental damage such as UV radiation and pollution, and help reduce inflammation and skin redness.

Ingredients

Est. % Ingredient Origin Functions
55
Water
9
Dimethicone
6
Glycerin
4
Butylene Glycol
3
Hydrogenated Polydecene
2.5
Triethylhexanoin
2
1,2-Hexanediol
1.5
Hydrogenated Polyisobutene
1.3
Niacinamide
1
Panthenol
0.3
Glyceryl Stearate
0.3
Steareth-21
0.3
Dimethicone/Vinyl Dimethicone Crosspolymer
0.3
Cetearyl Alcohol
0.3
PEG-100 Stearate
0.3
Serine
0.3
Trehalose
0.3
Sorbitol
0.3
Acrylamide/Sodium Acryloyldimethyltaurate Copolymer
0.3
Isohexadecane
0.3
Beheneth-20
0.3
Dipropylene Glycol
0.3
Lactobacillus/Soybean Ferment Extract
0.3
Polysorbate 80
0.3
Saccharomyces/Potato Extract Ferment Filtrate
0.3
Adenosine
0.3
Xanthan Gum
0.3
Biosaccharide Gum-1
0.3
Saccharomyces/Barley Seed Ferment Filtrate
0.3
Trisodium EDTA
0.3
Sorbitan Oleate
0.3
Butyrospermum Parkii (Shea) Butter
0.3
Arginine
0.3
Allantoin
0.3
Dextrin
0.3
Hyaluronic Acid
0.3
Hydrolyzed Hyaluronic Acid
0.3
Hydrolyzed Sodium Hyaluronate
0.3
Theobroma Cacao (Cocoa) Seed Extract
0.3
Glycyrrhiza Glabra (Licorice) Root Extract
0.3
Citric Acid
0.3
Tremella Fuciformis Polysaccharide
0.3
Ceramide NP
0.3
Yeast Extract
0.3
Ethylhexylglycerin
0.3
Phytosphingosine
0.3
Sodium Hyaluronate
0.3
Aureobasidium Pullulans Ferment
0.3
Dipotassium Glycyrrhizate
0.3
Cirsium (Thistle) Flower/Leaf/Stem Extract
0.3
Pentylene Glycol
0.3
Sodium Hyaluronate Crosspolymer
0.3
Paeonol
0.3
Fragrance
0.3
Linalool
0.3
Limonene
0.3
Citronellol
0.3
Geraniol
Est. %
Water
Function:
Origin:
Dimethicone
Function:
Origin:
Glycerin
Function:
Origin:
Butylene Glycol
Function:
Origin:
Hydrogenated Polydecene
Function:
Origin:
Triethylhexanoin
Function:
Origin:
1,2-Hexanediol
Function:
Origin:
Hydrogenated Polyisobutene
Function:
Origin:
Niacinamide
Function:
Origin:
Panthenol
Function:
Origin:
Glyceryl Stearate
Function:
Origin:
Steareth-21
Function:
Origin:
Dimethicone/Vinyl Dimethicone Crosspolymer
Function:
Origin:
Cetearyl Alcohol
Function:
Origin:
PEG-100 Stearate
Function:
Origin:
Serine
Function:
Origin:
Trehalose
Function:
Origin:
Sorbitol
Function:
Origin:
Acrylamide/Sodium Acryloyldimethyltaurate Copolymer
Function:
Origin:
Isohexadecane
Function:
Origin:
Beheneth-20
Function:
Origin:
Dipropylene Glycol
Function:
Origin:
Lactobacillus/Soybean Ferment Extract
Function:
Origin:
Polysorbate 80
Function:
Origin:
Saccharomyces/Potato Extract Ferment Filtrate
Function:
Origin:
Adenosine
Function:
Origin:
Xanthan Gum
Function:
Origin:
Biosaccharide Gum-1
Function:
Origin:
Saccharomyces/Barley Seed Ferment Filtrate
Function:
Origin:
Trisodium EDTA
Function:
Origin:
Sorbitan Oleate
Function:
Origin:
Butyrospermum Parkii (Shea) Butter
Function:
Origin:
Arginine
Function:
Origin:
Allantoin
Function:
Origin:
Dextrin
Function:
Origin:
Hyaluronic Acid
Function:
Origin:
Hydrolyzed Hyaluronic Acid
Function:
Origin:
Hydrolyzed Sodium Hyaluronate
Function:
Origin:
Theobroma Cacao (Cocoa) Seed Extract
Function:
Origin:
Glycyrrhiza Glabra (Licorice) Root Extract
Function:
Origin:
Citric Acid
Function:
Origin:
Tremella Fuciformis Polysaccharide
Function:
Origin:
Ceramide NP
Function:
Origin:
Yeast Extract
Function:
Origin:
Ethylhexylglycerin
Function:
Origin:
Phytosphingosine
Function:
Origin:
Sodium Hyaluronate
Function:
Origin:
Aureobasidium Pullulans Ferment
Function:
Origin:
Dipotassium Glycyrrhizate
Function:
Origin:
Cirsium (Thistle) Flower/Leaf/Stem Extract
Function:
Origin:
Pentylene Glycol
Function:
Origin:
Sodium Hyaluronate Crosspolymer
Function:
Origin:
Paeonol
Function:
Origin:
Fragrance
Function:
Origin:
Linalool
Function:
Origin:
Limonene
Function:
Origin:
Citronellol
Function:
Origin:
Geraniol
Function:
Origin:

Ratings

All humectants
17.7
6
4
1.3
1
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Benchmark
10
All occlusives
11.8
9.0
2.5
0.3
Benchmark
20
Moisturizing rating
8.0
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 17.7 10
10.0
6
4
1.3
1
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Occlusivity All occlusives 11.8 20
5.9
9.0
2.5
0.3
Moisturizing rating
8.0
Ingredient Est. % Benchmark Humectancy
6
4
1.3
1
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
All humectants 17.7 10
10
All humectants
17.7
6
4
1.3
1
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Benchmark
10
Ingredient Est. % Benchmark Occlusivity
9
2.5
0.3
All occlusives 11.8 20
5.9
All occlusives
11.8
9.0
2.5
0.3
Benchmark
20
Ingredient
Ingredient anti-wrinkle power
when present at, %
in this formula est. %
Rating
6 /10 4 1.3 2
n/a
- 0.3 -
Total
2
Niacinamide
2
Ingredient anti-wrinkle power
6 /10
when present at, %
4
in this formula, est. %
1.3
Adenosine
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
0.3
Anti-wrinkle rating
2
Ingredient Est. % Benchmark
Rich in Antioxidants
1.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
All antioxidants 3.4 3 Rich in antioxidants
All antioxidants
3.4
Niacinamide
1.3
Hyaluronic Acid
0.3
Hydrolyzed Hyaluronic Acid
0.3
Hydrolyzed Sodium Hyaluronate
0.3
Theobroma Cacao (Cocoa) Seed Extract
0.3
Glycyrrhiza Glabra (Licorice) Root Extract
0.3
Sodium Hyaluronate
0.3
Paeonol
0.3
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
1.3
1
0.3
0.3
0.3
0.3
0.3
All soothing 3.8 5 No
All soothing
3.8
1.3
1
0.3
0.3
0.3
0.3
0.3
Benchmark
5

Ingredients explained

Water
Est. %55
Function
Origin
WaterThe most used ingredient in skincare. Its concentration defines the product texture: rich creams may have about 50% of water while a light jelly about 90%. Water doesn’t moisturize the skin by itself and is used in skincare as a solvent for other ingredients.
Dimethicone
Est. %9
Function
Origin
DimethiconeThe most common silicone in skincare. It forms a silky, smooth film on the skin’s surface and can help to prevent water loss. It also aids in wound healing and can treat and soften scars. Dimethicone is considered to be very safe for use.
Glycerin
Est. %6
Function
Origin
Glycerin

The most popular moisturizing ingredient in the world. It is a powerful humectant – cheap yet very effective.

Butylene Glycol
Est. %4
Function
Origin
Butylene GlycolA clear, colorless liquid humectant that draws moisture to the skin. The humectancy of butylene glycol, owed to its two hydroxyl groups, is quite considerable, although not as powerful as glycerin, which contains three hydroxyl groups.
Hydrogenated Polydecene
Est. %3
Function
Origin
Hydrogenated PolydeceneA clear, colorless, highly viscous liquid that commonly serves as an emollient. This rich emollient is on the heavier side but provides a smooth sensorial profile upon application.
Triethylhexanoin
Est. %2.5
Function
Origin
TriethylhexanoinAn occlusive and emollient ester of glycerin and a fatty acid. It is easily spreadable and does not leave a sticky after-feel.
1,2-Hexanediol
Est. %2
Function
Origin
1,2-HexanediolA multi-functional formula helper. It is a well-studied preservtive against bacteria and can help pigments and fragrances disperse evenly in a formula.
Hydrogenated Polyisobutene
Est. %1.5
Function
Origin
Hydrogenated PolyisobuteneA viscous liquid that makes a great oil base due to its smooth sensorial profile. It has emollient features, including good spreadability and little tack upon application. It also has the added benefit of being able to thicken products.
Niacinamide
Est. %1.3
Function
Origin
Niacinamide

Also known as vitamin B3, this ingredient is a true superstar with confirmed moisturizing, anti-acne, hyperpigmentation, and antioxidant benefits. Two studies confirm its significant anti-wrinkle efficacy.

Panthenol
Est. %1
Function
Origin
PanthenolA popular soothing and moisturizing derivative of vitamin B5. Panthenol is particularly beneficial for dry, flaking, burned, or damaged skin. It is used to alleviate the symptoms of a rash, dermatitis, eczema, chapped lips, and sunburn.
Glyceryl Stearate
Est. %0.3
Function
Origin
Glyceryl StearateAn emollient and emulsifier typically derived from vegetable sources through a chemical reaction with glycerin. It provides stability, texture, and consistency to formulations. Its main function is to allow oil and water to mix.
Steareth-21
Est. %0.3
Function
Origin
Steareth-21One of several emulsifiers in the 'steareth' group that helps oils and water mix, especially in highly acidic emulsions. It also offers a cleansing effect to the skin.
Dimethicone/Vinyl Dimethicone Crosspolymer
Est. %0.3
Function
Origin
Dimethicone/Vinyl Dimethicone CrosspolymerThis ingredient can refer to several kinds of dimethicone crosspolymers. Like other silicones, it makes products feel slippery and non-greasy but can also increase the thickness or improve the water-resistance of a formula.
Cetearyl Alcohol
Est. %0.3
Function
Origin
Cetearyl AlcoholA blend of cetyl alcohol and stearyl alcohol, the fatty alcohols that are derived from palm oil. It helps to create emulsions that give off a soft and silky emollient feel and also increase product thickness.
PEG-100 Stearate
Est. %0.3
Function
Origin
PEG-100 StearateThis surfactant is more specifically classified as an emulsifier that produces oil-in-water emulsions. PEG-100 stearate can also be used as a cleansing agent.
Serine
Est. %0.3
Function
Origin
SerineA non-essential amino acid, meaning that our body can produce it. It is the largest constituent of the skin's Natural Moisturizing Factor and is used in skincare as a humectant moisturizing ingredient.
Trehalose
Est. %0.3
Function
Origin
TrehaloseA sweet-tasting saccharide that can be found in various yeasts and fungi and that is manufactured from starch for cosmetic purposes. It is one of the most popular sugars in skincare and is mainly used for its humectant properties.
Sorbitol
Est. %0.3
Function
Origin
SorbitolA sweet-tasting alcohol derived from glucose. Aside from its sweet taste (for which it is used as a very common sweetener), Sorbitol is also very good at retaining water and is used in skincare as a humectant.
Acrylamide/Sodium Acryloyldimethyltaurate Copolymer
Est. %0.3
Function
Origin
Acrylamide/Sodium Acryloyldimethyltaurate CopolymerA synthetic ingredient that forms a gel when mixed with water. It can thus thicken and stabilize a product.
Isohexadecane
Est. %0.3
Function
Origin
IsohexadecaneA clear, colorless liquid that is commonly used as an emollient. It is made up of pure hydrocarbons and leaves a dry feeling on the skin upon application. It also increases the spreadability of a product.
Beheneth-20
Est. %0.3
Function
Origin
Beheneth-20
Dipropylene Glycol
Est. %0.3
Function
Origin
Dipropylene GlycolA clear, colorless liquid that has several uses. One of its main functions is as a solvent. Dipropylene glycol is also used to reduce the thickness of skincare products.
Lactobacillus/Soybean Ferment Extract
Est. %0.3
Function
Origin
Lactobacillus/Soybean Ferment ExtractA biotechnological ingredient that is essentially soy milk fermented with lactic acid bacteria. It may help to treat skin pigmentation but more research is needed to support this claim.
Polysorbate 80
Est. %0.3
Function
Origin
Polysorbate 80A non-ionic surfactant, which means that it contains no chemical charges. It can be used as a mild cleansing agent in skin cleansing products but is more commonly used for its emulsifying abilities.
Saccharomyces/Potato Extract Ferment Filtrate
Est. %0.3
Function
Origin
Saccharomyces/Potato Extract Ferment Filtrate
Adenosine
Est. %0.3
Function
Origin
Adenosine

A key molecule responsible for energy transportation, signaling, and enzyme activity. Adenosine is a popular anti-wrinkle ingredient, however, the key study about its anti-wrinkle efficacy (1) does not meet CreamScan Research Evaluation Standards as it is not double-blind.

Xanthan Gum
Est. %0.3
Function
Origin
Xanthan GumA natural multi-functional ingredient that originates from fermented sugars. Xanthan gum acts as a viscosity-building agent to thicken skincare products. It is also an excellent stabilizer and works well to hold other ingredients together.
Biosaccharide Gum-1
Est. %0.3
Function
Origin
Biosaccharide Gum-1A polysaccharide with humectant moisturizing and soothing properties.
Saccharomyces/Barley Seed Ferment Filtrate
Est. %0.3
Function
Origin
Saccharomyces/Barley Seed Ferment Filtrate
Trisodium EDTA
Est. %0.3
Function
Origin
Trisodium EDTAA chelating agent designed to encapsulate potentially harmful heavy metal ions that enter the formula through the water source. Once encapsulated, these heavy metal ions become inert.
Sorbitan Oleate
Est. %0.3
Function
Origin
Sorbitan OleateA vegetable-based ingredient that stabilizes mixtures of oil and water. Sorbitan oleate serves primarily as an emulsifier that produces water-in-oil emulsions.
Butyrospermum Parkii (Shea) Butter
Est. %0.3
Function
Origin
Butyrospermum Parkii (Shea) ButterA semi-solid, buttery fat extracted from the seeds of the Shea tree that is a wonderful occlusive and emollient ingredient mainly comprised of fatty acids. Shea butter contains a large amount of anti-inflammatory and antioxidant compounds.
Arginine
Est. %0.3
Function
Origin
ArginineA humectant amino acid used to attract water to the skin’s surface. It is a part of the skin's Natural Moisturizing Factor, a mixture of various compounds that keeps the skin’s surface well hydrated. Arginine can also be used as a pH adjuster.
Allantoin
Est. %0.3
Function
Origin
AllantoinA fluffy, white powder that acts as a humectant due to its water-loving chemistry and as an exfoliant that helps to remove dead skin cells. It has also been shown to be very soothing to irritated and inflamed skin.
Dextrin
Est. %0.3
Function
Origin
DextrinA partially hydrolyzed potato starch, most commonly used as a viscosity controlling and binding agent. When dispersed into water, it can create textures ranging from a thick paste to a soft gel.
Hyaluronic Acid
Est. %0.3
Function
Origin
Hyaluronic Acid

A potent, skin-identical humectant moisturizing ingredient that is able to bind water 1000 times its own weight. The anti-aging benefits of hyaluronic acid are due to its ability to stimulate the synthesis of collagen in the skin.

Hydrolyzed Hyaluronic Acid
Est. %0.3
Function
Origin
Hydrolyzed Hyaluronic AcidA smaller-molecule version of the regular hyaluronic acid. It is a powerful humectant that absorbs into the skin and offers moisturizing, smoothing, and anti-wrinkle effects. It is also slightly anti-inflammatory and displays subtle antioxidant properties.
Hydrolyzed Sodium Hyaluronate
Est. %0.3
Function
Origin
Hydrolyzed Sodium HyaluronateA very small-molecule version of regular sodium hyaluronate. It is a powerful humectant skin-identical ingredient that absorbs into the skin and offers plumping, smoothing, and anti-wrinkle effects.
Theobroma Cacao (Cocoa) Seed Extract
Est. %0.3
Function
Origin
Theobroma Cacao (Cocoa) Seed ExtractA cocoa beans extract that contains caffeine and astringent and antioxidant flavonols and tannins.
Glycyrrhiza Glabra (Licorice) Root Extract
Est. %0.3
Function
Origin
Glycyrrhiza Glabra (Licorice) Root ExtractAn extract from the licorice root. It contains a well-researched anti-inflammatory compound called glycyrrhizin that can reduce inflammation. Licorice root extract is also used for its powerful antioxidant effects and ability to treat pigmentation.
Citric Acid
Est. %0.3
Function
Origin
Citric AcidA gently exfoliating AHA that helps to remove the top layer of dead skin cells. In comparison to other AHAs, citric acid has been shown to be one of the least effective. It is also very commonly used as a stabilizing and pH-controlling agent.
Tremella Fuciformis Polysaccharide
Est. %0.3
Function
Origin
Tremella Fuciformis Polysaccharide
Ceramide NP
Est. %0.3
Function
Origin
Ceramide NPAlso known as ceramide 3, it is the most common ceramide in our skin. It helps to restore the skin’s lipid barrier and alleviate the symptoms of dry and cracked skin. Research has shown that skin suffering from conditions such as AD lacks ceramides.
Yeast Extract
Est. %0.3
Function
Origin
Yeast ExtractAlso labeled as faex extract, this is a natural ingredient derived from fresh yeast. It is used in skincare as a humectant. Yeast extract also helps to shield injured or exposed skin and can aid in the skin’s wound healing process.
Ethylhexylglycerin
Est. %0.3
Function
Origin
EthylhexylglycerinA preservative booster derived from glycerin. It is commonly paired with other preservatives to improve their efficacy. Ethylhexylglycerin is also a humectant due to its chemical base of glycerin.
Phytosphingosine
Est. %0.3
Function
Origin
PhytosphingosineA key component of ceramides NP, AP, and EOP. It has barrier repair properties and stimulates the production of the skin’s Natural Moisturizing Factor. Phytosphingosine has strong antimicrobial and anti-inflammatory activity, which can be used to treat acne.
Sodium Hyaluronate
Est. %0.3
Function
Origin
Sodium Hyaluronate

A sodium salt of famous hyaluronic acid. A potent humectant that hydrates the skin, supports collagen function, and fills out small wrinkles. Sodium hyaluronate also offers soothing and antioxidant properties.

Aureobasidium Pullulans Ferment
Est. %0.3
Function
Origin
Aureobasidium Pullulans Ferment
Dipotassium Glycyrrhizate
Est. %0.3
Function
Origin
Dipotassium GlycyrrhizateA licorice root derivative with powerful anti-inflammatory and soothing activities. It is often used as a flavoring agent in lip products.
Cirsium (Thistle) Flower/Leaf/Stem Extract
Est. %0.3
Function
Origin
Cirsium (Thistle) Flower/Leaf/Stem Extract
Pentylene Glycol
Est. %0.3
Function
Origin
Pentylene Glycol

A naturally or synthetically derived preservative that exhibits effective antifungal and antibacterial traits. It also acts as a booster for more traditional preservatives. Pentylene glycol can also serve as a moisturizing humectant and solvent.

Sodium Hyaluronate Crosspolymer
Est. %0.3
Function
Origin
Sodium Hyaluronate CrosspolymerA modified version of regular hyaluronic acid. It attracts large volumes of water, thereby making it an effective humectant moisturizing ingredient.
Paeonol
Est. %0.3
Function
Origin
Paeonol
Fragrance
Est. %0.3
Function
Origin
FragranceUnder trade secret law, manufacturers have the right not to disclose what exactly went into the fragrance and use the unspecific word Fragrance or Parfum instead. Many fragrances are highly allergenic.
Linalool
Est. %0.3
Function
Origin
LinaloolA fragrant, volatile compound naturally present in many essential oils. It has a pleasant scent and is often used in skincare products as a fragrance. People with sensitive skin should try to avoid it, or at least do a patch test before using it.
Limonene
Est. %0.3
Function
Origin
LimoneneOne of the most used fragrances in skincare products. It is produced from the peels of citrus fruits and has a fresh, pleasant, citrusy smell. People who are sensitive to citrus should try to avoid it, or at least do a patch test before using it.
Citronellol
Est. %0.3
Function
Origin
CitronellolA fragrant compound found naturally in many essential oils (mainly lemongrass). It can have a lemon or a rose scent. People with sensitive skin should try to avoid products with citronellol, or at least do a patch test before using it.
Geraniol
Est. %0.3
Function
Origin
GeraniolA fragrant, volatile, plant-based, liquid chemical that can be naturally found in many essential oils (specifically rose, palmarosa, citronella). It has a rose-like scent. It is a potential irritant and may cause an allergic reaction in some people.