Kosas Lip Pulse Aura Flare

Kosas Lip Pulse

Color: Aura Flare
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Overview

What it is

Lip plumper with 23 ingredients that contains exfoliants

Cool Features

It is vegan, cruelty-free, and reef safe

Suited For

It has ingredients that are good for sensitive skin

Free From

It doesn't contain any harsh alcohols, parabens, silicones or sulfates

Fun facts

Kosas 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

Key Ingredients

Benefits

Concerns

Ingredients Explained

Polybutene is used to help control the viscosity of a product. This just means it helps adjusts the texture.

It is a polymer and does not get absorbed into the skin due to its large size.

Studies found this ingredient did not irritate skin in concentrations below 15%.

Learn more about Polybutene
Emollient, Skin Conditioning

Hydrogenated Polyisobutene is a synthetic polymer. Polymers are compounds with high molecular weight. Hydrogenated Polyisobutene is an emollient and texture enhancer.

In one study, Hydrogenated Polyisobutene showed better skin hydration levels than Caprylic/Capric Triglyceride. As an emollient, it helps keep your skin soft and hydrated by trapping moisture in.

Hydrogenated Polyisobutene is often used as a mineral oil replacement.

Learn more about Hydrogenated Polyisobutene

Octyldodecyl Stearoyl Stearate is an emollient ester that mostly shows up in color cosmetics.

Functionally, it works as a skin-conditioning agent and a viscosity-increasing agent. This just means it helps soften skin while also thickening water-free formulas (like powders).

Despite being a "stearate", it has a lightweight, cushiony, and non-greasy slip.

This ingredient has shown no adverse effects in testing and is deemed safe in cosmetics at current use levels.

Typical concentrations range from 0.7-23%.

Because it is made of C-18 fatty acids (like stearic acid), this ingredient may not be fungal acne safe.

Learn more about Octyldodecyl Stearoyl Stearate
Emollient, Skin Conditioning

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 Trimellitate
Emulsifying, Surfactant

Dextrin Palmitate is an oil-loving texture helper made by bonding palmitic acid onto Dextrin. It's main roles are to turn liquid oils into spreadable gels and prevent ingredients from separating.

It also lends a silky, non-greasy slip that makes products feel more elegant.

Typical use concentrations range from 0.5-5%, but can go up to 10% depending on how firm the gel is.

Because it's an ester built on a fatty acid, it may not be fungal acne safe.

Learn more about Dextrin Palmitate
Emulsifying, Surfactant

This ingredient is an emulsifier. It helps enhance the texture and stability of formulas.

The only manufacturer of this ingredient is in Japan. According to them, this ingredient reduces the tackiness and greasiness of products.

Dextrin Palmitate/Ethylhexanoate is created by reacting dextrin with a mixture of palmitoyl chloride and hexyldecanoic acid chloride.

Learn more about Dextrin Palmitate/Ethylhexanoate
Humectant

We don't have a description for Menthyl Nicotinate yet.

This ingredient is the small fraction of sunflower seed oil (~1.5-2% of the whole oil) that cannot be turned into soap.

This concentrated fraction is rich in skin-nourishing compounds like free fatty acids, tocopherols, and phytosterols. Linoleic acid makes up about 48-74% of its composition.

Unsaponifiables have high antioxidant potential due to the tocopherols, carotenoids, and phenolic acids that help protect skin from free radical damage. On the other hand, linoleic acid supports the skin's barrier by replenishing ceramides and reducing transepidermal water loss.

A manufacturer-sponsored clinical study found that a cream with 2% of this ingredient increased skin moisturization by 48.6% after 1 hour and 34.2% after 24 hours.

Using this cream twice-daily for 4 weeks showed meaningful improvement in dryness, roughness, and desquamation (the shedding of dead skin cells).

Keep in mind this is a small, industry-funded study so it'd be great to see independent replication. However, the mechanism is consistent with well-establish linoleic and phytosterol research.

While this ingredient is generally considered safe, those with an Asteraceae/Compositae plant allergy should patch test this ingredient.

Fungal acne: this ingredient is not considered safe for fungal acne because the Malassezia yeast preferentially metabolizes in the C11-24 range. Linoleic acid falls into this range at C18.

Learn more about Helianthus Annuus Seed Oil Unsaponifiables

Calcium Aluminum Borosilicate is made up of calcium, aluminum, and silicates. It is a glass-like material. In cosmetics, it comes in the form of flakes or microspheres.

Calcium aluminum borosilicate is a bulking agent, meaning it helps thicken a product.

This ingredient is created by slowly mixing several minerals, including kaolin clay.

Although “aluminum” in an ingredient name can raise red flags for some consumers, the form and usage context matter significantly. For typical topical applications, there is no substantial evidence of health risks - such as cancer, neurotoxicity, or systemic “aluminum overload.”

Learn more about Calcium Aluminum Borosilicate
Masking, Refreshing

Menthyl lactate is an ester of menthol and lactic acid. It is often used as a cooling agent and fragrance.

When applied topically, this ingredient leaves a refreshing sensation like menthol, but is less irritating.

Soothing, Tonic

We don't have a description for Methyl Nicotinate yet.

Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate (long name, huh?) is a synthetic antioxidant.

It is used to help stabilize other antioxidants or prevent the color from changing in a product.

As an antioxidant, it helps fight free-radical molecules. Free-radical molecules are capable of damaging our cells and other genetic material. Thus, antioxidants may reduce the signs of aging.

This ingredient is oil-soluble.

Learn more about Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
Masking, Skin Conditioning

We don't have a description for Vanillyl Butyl Ether yet.

Emollient, Skin Conditioning

Canola Oil is a plant-oil and low-erucic-acid variety of rapeseed. Like other seed oils, it functions as an emollient that softens skin and slows water loss.

Its fatty acid profile is mostly linoleic acid (55-65%) with some oleic, palmitic, and stearic acids. There are also some small amounts of vitamin E and plant sterols.

The sterol content is pretty interesting:

In a controlled human study, a single application of canola oil and especially its sterol-enriched fraction reduced visible irritation, redness, and water loss caused by SLS. Plain canola oil and most other tested oils did little on healthy, un-irritated skin.

It's pretty much just a calm, moisturizing oil that helps with soothing if your skin is already irritated.

Since canola oil is made up of C18 fatty acids, it may not be fungal acne safe. The Malassezia yeast feeds on chain lengths C11-24.

Fun fact: Canadian growers bred the low-erucic variety in the 1970's, and the name stands for "Canadian oil, Low Acid").

Learn more about Canola Oil

Capsicum Frutescens is a type of wild chili pepper. Some varieties of this pepper include Tabasco pepper, Malagueta pepper, and Piri Piri pepper.

Though this ingredient is normally associated with food, it has antidandruff, antifungal, antimicrobial, and antioxidant properties.

Studies show low concentrations of this ingredient did not cause skin irritation:

Raw peppers may have a rubefacient effect, or mild local skin irritation resulting in vasodilation. Vasodilation is the widening of blood vessels. Due to this, peppers can provide a lip plumping effect. However, it is most likely not going to have a rubefacient effect, or cause skin irritation, in your cosmetics.

The antioxidant activity comes from its flavonoid, polyphenol, and sterol content.

This ingredient is water-soluble.

Learn more about Capsicum Frutescens Fruit Extract
Masking, Perfuming, Skin Conditioning

Zingiber Officinale is more commonly known as ginger.

Studies show the ginger root has antioxidant, anti-inflammation, and antimicrobial properties.

The antioxidant properties help protect your body from free-radicals. Free-radicals are molecules that may damage your skin cells. As a result, ginger may help slow down signs of aging such as hyperpigmentation and wrinkles.

Ginger originates from Southeast Asia but has spread throughout the world. It is now a common spice used in many cultures.

Learn more about Zingiber Officinale Root Oil
Masking, Refreshing

Menthol is a compound found in mint plants, such as peppermint. In its pure form, it is a clear crystalline substance.

Menthol is known for its cooling sensation; however, the cooling is actually from your skin being sensitized. Menthol can worsen rosacea. We recommend speaking with a professional if you have concerns.

Menthol also has antimicrobial properties.

Learn more about Menthol
Abrasive

Tin Oxide is an inorganic oxide used to add opacity and volume to a product. In nature, it is already found in mineral form. The main ore of tin is an opaque and shiny mineral called casseterite.

Tin Oxide helps remove translucency in a product, or make it more opaque. Besides adding opacity, tin oxide is used for bulking to add volume.

Masking

Vanillin is the main compound of the vanilla bean. It is naturally occuring but can also be artificially created.

This ingredient exhibits antioxidant properties but is also a known skin-irritant.

Vanillism is the term of contact-dermatitis associated with the vanilla plant. The sap of the vanilla plant triggers skin irritation, swelling, and redness.

Learn more about Vanillin
Emollient, Emulsifying, Surfactant

Pentaerythrityl Tetraisostearate is a synthetic emollient and "skin-feel" ingredient that spreads well and leaves a non-sticky finish with high gloss.

In makeup, it also doubles as a pigment-wetting agent for better color payoff.

It's a well-vetted ingredient for safety and does not penetrate into skin due to its large molecule size.

Because it's a long-chain fatty acid ester, this ingredient may not be fungal acne or Malassezia safe.

Learn more about Pentaerythrityl Tetraisostearate
Masking, Perfuming

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 Parfum
Cosmetic Colorant

Ci 77891 is a white pigment from Titanium dioxide. It is naturally found in minerals such as rutile and ilmenite.

It's main function is to add a white color to cosmetics. It can also be mixed with other colors to create different shades.

Ci 77891 is commonly found in sunscreens due to its ability to block UV rays.

Learn more about CI 77891
Cosmetic Colorant

CI 45410 is a synthetic red-pigment and dye.

It often goes by both Red 28 or Red 27; manufacturers label both ingredients as CI 45410.

This dye is commonly found in makeup because it imparts a vivid color. Some types of this dye change color based on pH level and interaction with moisture:

Your skin has a natural pH of around 4.5 - 5.5.

According to the FDA, CI 45410 is not permitted for use in eye products.

Red 27 is a flourescein dye and commonly used as a fluorescent tracer in medicine.

Learn more about CI 45410

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Where it's from

Kosas is a American brand

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· Updated April 9, 2026 Added by sarahburton2