Augustinus Bader The Eyebrow and Lash Defining Serum

Common questions

Is Augustinus Bader The Eyebrow and Lash Defining Serum healthy?

Augustinus Bader The Eyebrow and Lash Defining Serum scores 92/100 on Scout's independent analysis of ingredients, additives, and lab results — one of the stronger scores in Scout's catalog. This serum features a clean and natural ingredient list, including beneficial components like sunflower seed oil, castor seed oil, and hydrolyzed hyaluronic acid, which provide moisturizing and skin-conditioning benefits.

Which ingredients drive Augustinus Bader The Eyebrow and Lash Defining Serum's score?

In Scout's ingredient-by-ingredient analysis, Helianthus Annuus (Sunflower) Seed Oil, Undaria Pinnatifida Extract, Panthenol count in its favor; Sodium Benzoate, Potassium Sorbate are flagged as ingredients of concern. The full breakdown, with why each one matters, is in the Key ingredients section on this page.

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Augustinus Bader The Eyebrow and Lash Defining Serum

Augustinus Bader
92 Excellent

Analysis updated August 2026 · How Scout scores

$160.00 · 7 ml · $941.18 / ounce
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At a glance

Beneficial ingredients 17
Harmful ingredients 2
Category Serum
Summary

This serum features a clean and natural ingredient list, including beneficial components like sunflower seed oil, castor seed oil, and hydrolyzed hyaluronic acid, which provide moisturizing and skin-conditioning benefits. The absence of harsh chemicals, synthetic fragrances, and endocrine disruptors contributes to its high rating. The product is minimally processed, enhancing its appeal as a safe and effective cosmetic option.

Key ingredients 37

Helianthus Annuus (Sunflower) Seed Oil
Very Good

Sunflower Seed Oil is a natural oil rich in fatty acids and vitamin E. It is known for its moisturizing and skin-conditioning properties. It is non-comedogenic and suitable for all skin types.

Risks

There are minimal risks, though it may cause allergic reactions in individuals with sunflower allergies.

Benefits

It nourishes and hydrates the skin, improving its overall health and appearance.

See more about Helianthus Annuus (Sunflower) Seed Oil →
Panthenol
Very Good

Panthenol, also known as provitamin B5, is a moisturizing and soothing agent. It helps improve skin hydration and reduces inflammation. It is widely used in cosmetics for its skin-conditioning properties.

Risks

There are minimal risks, though it may cause mild irritation in sensitive individuals.

Benefits

It enhances skin moisture retention and promotes healing of damaged skin.

See more about Panthenol →
Ricinus Communis (Castor) Seed Oil
Very Good

Castor Seed Oil is a natural oil known for its moisturizing and conditioning properties. It is rich in fatty acids and helps nourish the skin and hair. It is considered safe and beneficial for all skin types.

Risks

There are minimal risks, though it may cause allergic reactions in individuals with castor oil allergies.

Benefits

It provides deep hydration and improves the health and appearance of skin and hair.

See more about Ricinus Communis (Castor) Seed Oil →
Hydrolyzed Hyaluronic Acid
Very Good

Hydrolyzed Hyaluronic Acid is a low molecular weight form of hyaluronic acid. It penetrates the skin more effectively, providing deep hydration. It is considered safe and beneficial for all skin types.

Risks

There are minimal risks, though it may cause mild irritation in sensitive individuals.

Benefits

It enhances skin moisture retention and improves skin elasticity.

Aloe Barbadensis Leaf Juice Powder
Very Good

Aloe Vera is known for its soothing and moisturizing properties. It helps calm irritated skin and provides hydration. It is considered safe and beneficial for all skin types.

Risks

There are minimal risks, though it may cause allergic reactions in individuals with aloe allergies.

Benefits

It soothes and hydrates the skin, promoting healing and comfort.

See more about Aloe Barbadensis Leaf Juice Powder →
Camellia Sinensis Leaf Extract
Very Good

Green Tea Extract is rich in antioxidants and has anti-inflammatory properties. It helps protect the skin from environmental damage and reduces redness. It is considered safe and beneficial for all skin types.

Risks

There are minimal risks, though it may cause mild irritation in sensitive individuals.

Benefits

It provides antioxidant protection and soothes irritated skin.

See more about Camellia Sinensis Leaf Extract →
Tocopherol
Very Good

Tocopherol, also known as vitamin E, is a powerful antioxidant. It helps protect the skin from environmental damage and supports skin health. It is considered safe and beneficial for all skin types.

Risks

There are minimal risks, though it may cause mild irritation in sensitive individuals.

Benefits

It provides antioxidant protection and improves skin texture.

See more about Tocopherol →
Undaria Pinnatifida Extract
Good

Undaria Pinnatifida Extract is derived from seaweed and is rich in antioxidants. It helps protect the skin from environmental damage and supports skin health. It is considered safe and beneficial in cosmetic formulations.

Risks

There are no significant risks associated with this ingredient.

Benefits

It provides antioxidant protection and helps maintain skin elasticity.

See more about Undaria Pinnatifida Extract →
Glycerin
Good

Glycerin is a well-known humectant that attracts moisture to the skin. It helps maintain skin hydration and improves barrier function. It is safe and effective for all skin types.

Risks

There are minimal risks, though excessive use may lead to a sticky feeling on the skin.

Benefits

It provides long-lasting hydration and supports skin health.

See more about Glycerin →
Carthamus Tinctorius Flower Extract
Good

Carthamus Tinctorius Flower Extract is derived from safflower and is rich in antioxidants. It helps protect the skin from environmental damage and supports skin health. It is considered safe and beneficial in cosmetic formulations.

Risks

There are no significant risks associated with this ingredient.

Benefits

It provides antioxidant protection and helps maintain skin elasticity.

Hibiscus Sabdariffa Flower Extract
Good

Hibiscus Sabdariffa Flower Extract is rich in antioxidants and natural acids. It helps exfoliate the skin and improve its texture. It is considered safe and beneficial in cosmetic formulations.

Risks

There are minimal risks, though it may cause mild irritation in sensitive individuals.

Benefits

It provides gentle exfoliation and antioxidant protection.

See more about Hibiscus Sabdariffa Flower Extract →
Biotin
Good

Biotin, also known as vitamin B7, is a water-soluble vitamin that supports skin and hair health. It is often used in cosmetics to strengthen hair and improve its appearance. It is considered safe and beneficial.

Risks

There are minimal risks, though excessive use may lead to skin irritation.

Benefits

It helps strengthen hair and supports healthy skin function.

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Hydrolyzed Rice Protein
Good

Hydrolyzed Rice Protein is a plant-derived protein that helps strengthen and condition hair. It is known for its moisturizing and protective properties. It is considered safe and beneficial in cosmetic formulations.

Risks

There are minimal risks, though it may cause mild irritation in sensitive individuals.

Benefits

It improves hair strength and elasticity, reducing breakage.

See more about Hydrolyzed Rice Protein →
Sodium Hyaluronate
Good

Sodium Hyaluronate is a salt form of hyaluronic acid known for its hydrating properties. It helps retain moisture in the skin and improve its elasticity. It is considered safe and beneficial for all skin types.

Risks

There are minimal risks, though it may cause mild irritation in sensitive individuals.

Benefits

It provides long-lasting hydration and supports skin health.

See more about Sodium Hyaluronate →
Tocopheryl Acetate
Good

Tocopheryl Acetate is a form of vitamin E known for its antioxidant properties. It helps protect the skin from environmental damage and supports skin health. It is considered safe and beneficial for all skin types.

Risks

There are minimal risks, though it may cause mild irritation in sensitive individuals.

Benefits

It provides antioxidant protection and improves skin texture.

See more about Tocopheryl Acetate →
Oligopeptide-177
Good

Oligopeptide-177 is a peptide used for its anti-aging and skin-conditioning properties. It helps improve skin texture and reduce the appearance of fine lines. It is considered safe and beneficial for most skin types.

Risks

There are minimal risks, though it may cause mild irritation in sensitive individuals.

Benefits

It supports skin elasticity and reduces signs of aging.

Sisymbrium Irio Seed Oil
Good

Sisymbrium Irio Seed Oil is a natural oil known for its moisturizing and conditioning properties. It helps nourish the skin and improve its texture. It is considered safe and beneficial for all skin types.

Risks

There are minimal risks, though it may cause allergic reactions in individuals with seed oil allergies.

Benefits

It provides deep hydration and improves the health and appearance of skin.

Aqua/Water/Eau
Neutral

Aqua is commonly used as a solvent in cosmetic formulations. It helps dissolve other ingredients and provides a base for the product. It is generally considered safe and non-reactive.

Risks

There are no significant risks associated with water in cosmetic formulations.

Benefits

Water acts as a carrier for active ingredients, ensuring they are evenly distributed.

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Polyglyceryl-10 Stearate
Neutral

Polyglyceryl-10 Stearate is an emulsifier that helps blend oil and water components. It is derived from natural sources and is considered safe for use in cosmetics. It is non-irritating and suitable for sensitive skin.

Risks

There are minimal risks associated with this ingredient, though some individuals may experience mild irritation.

Benefits

It helps stabilize formulations, improving texture and consistency.

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Pentylene Glycol
Neutral

Pentylene Glycol is a synthetic humectant and solvent. It helps retain moisture in the skin and enhances the penetration of other ingredients. It is generally considered safe for use in cosmetics.

Risks

In rare cases, it may cause mild irritation or allergic reactions.

Benefits

It provides moisturizing benefits and improves the efficacy of active ingredients.

See more about Pentylene Glycol →
Propanediol
Neutral

Propanediol is a glycol used as a solvent and humectant in cosmetics. It helps improve the texture and spreadability of products. It is considered safe and non-irritating for most skin types.

Risks

In rare cases, it may cause mild irritation or allergic reactions.

Benefits

It enhances the absorption of active ingredients and provides moisturizing benefits.

See more about Propanediol →
Polyglyceryl-3 Diisostearate
Neutral

Polyglyceryl-3 Diisostearate is an emulsifier that helps blend oil and water components. It is derived from natural sources and is considered safe for use in cosmetics. It is non-irritating and suitable for sensitive skin.

Risks

There are minimal risks associated with this ingredient, though some individuals may experience mild irritation.

Benefits

It helps stabilize formulations, improving texture and consistency.

See more about Polyglyceryl-3 Diisostearate →
Carbomer
Neutral

Carbomer is a synthetic polymer used as a thickening agent in cosmetics. It helps stabilize emulsions and improve product texture. It is considered safe and non-irritating for most skin types.

Risks

There are minimal risks, though it may cause mild irritation in sensitive individuals.

Benefits

It enhances the consistency and stability of formulations.

See more about Carbomer →
Citric Acid
Neutral

Citric Acid is used to adjust the pH of cosmetic formulations. It is derived from citrus fruits and is generally considered safe. It is non-irritating at low concentrations.

Risks

In high concentrations, it may cause irritation or sensitivity.

Benefits

It helps maintain the stability and efficacy of formulations by balancing pH levels.

See more about Citric Acid →
O-Cymen-5-Ol
Neutral

O-Cymen-5-Ol is a synthetic antimicrobial agent used to preserve cosmetics. It helps prevent the growth of bacteria and fungi. It is considered safe for use in cosmetics at low concentrations.

Risks

In rare cases, it may cause mild irritation or allergic reactions.

Benefits

It helps extend the shelf life of products by preventing microbial contamination.

See more about O-Cymen-5-Ol →
Maltodextrin
Neutral

Maltodextrin is a polysaccharide used as a binding and stabilizing agent in cosmetics. It helps improve the texture and consistency of products. It is considered safe and non-irritating for most skin types.

Risks

There are minimal risks, though it may cause mild irritation in sensitive individuals.

Benefits

It enhances the stability and performance of formulations.

See more about Maltodextrin →
Chondrus Crispus (Carrageenan) Extract
Neutral

Carrageenan Extract is derived from red algae and is used as a thickening agent in cosmetics. It helps improve the texture and stability of formulations. It is considered safe and non-irritating for most skin types.

Risks

There are minimal risks, though it may cause mild irritation in sensitive individuals.

Benefits

It enhances the consistency and stability of formulations.

Sodium Hydroxide
Neutral

Sodium Hydroxide is used to adjust the pH of cosmetic formulations. It is effective at low concentrations and is generally considered safe. It is non-irritating when used appropriately.

Risks

In high concentrations, it may cause irritation or sensitivity.

Benefits

It helps maintain the stability and efficacy of formulations by balancing pH levels.

See more about Sodium Hydroxide →
Lactic Acid
Neutral

Standard formulation ingredient — neither beneficial nor harmful at typical use.

Risks

In high concentrations, it may cause irritation or sensitivity.

Benefits

It provides gentle exfoliation and enhances skin moisture retention.

See more about Lactic Acid →
Hydrogenated Lecithin
Neutral

Hydrogenated Lecithin is used as an emulsifier and skin-conditioning agent in cosmetics. It helps improve the texture and stability of formulations. It is considered safe and non-irritating for most skin types.

Risks

There are minimal risks, though it may cause mild irritation in sensitive individuals.

Benefits

It enhances the consistency and performance of formulations.

See more about Hydrogenated Lecithin →
Xanthan Gum
Neutral

Xanthan Gum is a natural thickening agent used in cosmetics. It helps stabilize emulsions and improve product texture. It is considered safe and non-irritating for most skin types.

Risks

There are minimal risks, though it may cause mild irritation in sensitive individuals.

Benefits

It enhances the consistency and stability of formulations.

See more about Xanthan Gum →
Alanyl Glutamine
Neutral

Alanyl Glutamine is a dipeptide used for its skin-conditioning properties. It helps improve skin hydration and elasticity. It is considered safe and non-irritating for most skin types.

Risks

There are minimal risks, though it may cause mild irritation in sensitive individuals.

Benefits

It enhances skin moisture retention and supports skin health.

Arginine
Neutral

Arginine is an amino acid used for its skin-conditioning properties. It helps improve skin hydration and elasticity. It is considered safe and non-irritating for most skin types.

Risks

There are minimal risks, though it may cause mild irritation in sensitive individuals.

Benefits

It enhances skin moisture retention and supports skin health.

See more about Arginine →
Phenylalanine
Neutral

Phenylalanine is an amino acid used for its skin-conditioning properties. It helps improve skin hydration and elasticity. It is considered safe and non-irritating for most skin types.

Risks

There are minimal risks, though it may cause mild irritation in sensitive individuals.

Benefits

It enhances skin moisture retention and supports skin health.

See more about Phenylalanine →
Sodium Chloride
Neutral

Sodium Chloride, also known as salt, is used as a thickening agent in cosmetics. It helps improve the texture and stability of formulations. It is considered safe and non-irritating for most skin types.

Risks

In high concentrations, it may cause irritation or dryness.

Benefits

It enhances the consistency and stability of formulations.

See more about Sodium Chloride →
Sodium Benzoate
Bad

Synthetic preservative that can form benzene in the presence of vitamin C.

Risks

In rare cases, it may cause mild irritation or allergic reactions.

Benefits

It helps extend the shelf life of products by preventing spoilage.

See more about Sodium Benzoate →
Potassium Sorbate
Bad

Synthetic preservative — flagged in daily-use products.

Risks

In rare cases, it may cause mild irritation or allergic reactions.

Benefits

It helps extend the shelf life of products by preventing spoilage.

See more about Potassium Sorbate →

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