La Roche-Posay Oil-Infused Micellar Water Ultra is a type of skincare product designed to be rinsed off, peeled off, or otherwise removed from the skin. Research confirming the moisturizing, anti-wrinkle, and soothing effects of such products is very limited. Therefore, we do not provide efficacy ratings for these types of skincare products.
However, you can explore the roles of specific ingredients in the Ingredients Explained section below.
Est. %
The Estimated % is our algorithm-based assumption about an ingredient's concentration in a formula. Learn more The Estimated % is our algorithm-based assumption about an ingredient's concentration in a formula. Learn more | Ingredient | Origin | Functions | |
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80 | Water The 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. Water The 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. | Naturally occurring These are ingredients initially present in nature, such as elements (Zinc, Gold, or Silver), minerals, or water. Naturally occurring These are ingredients initially present in nature, such as elements (Zinc, Gold, or Silver), minerals, or water. | Formula helper
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6 | Isohexadecane A 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. Isohexadecane A 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. | Petroleum Ingredients derived from petroleum, also called crude oil. Crude oil deposits were obtained from the remains of ancient organisms, such as plants, algae, and bacteria. Petroleum Ingredients derived from petroleum, also called crude oil. Crude oil deposits were obtained from the remains of ancient organisms, such as plants, algae, and bacteria. | Emollient, Emollients fill the micro-cracks in the skin and leave it feeling soft and pleasant to the touch. Emollients are often mistakenly perceived as moisturizing ingredients. Emollient, Emollients fill the micro-cracks in the skin and leave it feeling soft and pleasant to the touch. Emollients are often mistakenly perceived as moisturizing ingredients. Formula helper
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4 | Dipropylene Glycol A 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. Dipropylene Glycol A 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. | Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. | Fragrance, Fragrance ingredients add scent to a product or hide ('mask') the undesired aroma of other ingredients. Fragrance, Fragrance ingredients add scent to a product or hide ('mask') the undesired aroma of other ingredients. Formula helper
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3 | 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. 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. | Botanical, Ingredients derived from plants, mosses, and lichens: extracts, oils, powders, juices and other types of processed plant materials. Botanical, Ingredients derived from plants, mosses, and lichens: extracts, oils, powders, juices and other types of processed plant materials. Synthetic, All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic, All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Petroleum Ingredients derived from petroleum, also called crude oil. Crude oil deposits were obtained from the remains of ancient organisms, such as plants, algae, and bacteria. Petroleum Ingredients derived from petroleum, also called crude oil. Crude oil deposits were obtained from the remains of ancient organisms, such as plants, algae, and bacteria. | Moisturizing (Humectant), Humectants are moisturizing ingredients that draw moisture to the skin, either from deeper layers or from the environment (when it's humid). Moisturizing (Humectant), Humectants are moisturizing ingredients that draw moisture to the skin, either from deeper layers or from the environment (when it's humid). Preservative, Preservatives prevent the growth of bacteria and fungi in a product. Preservative, Preservatives prevent the growth of bacteria and fungi in a product. Formula helper
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2 | Sodium Chloride You’re definitely familiar with sodium chloride, even if you don’t think you are. It’s table salt! Salt works well with some cleansing ingredients (surfactants) to thicken them into gels. It also acts as a stabilizer for water-in-oil emulsions. Sodium Chloride You’re definitely familiar with sodium chloride, even if you don’t think you are. It’s table salt! Salt works well with some cleansing ingredients (surfactants) to thicken them into gels. It also acts as a stabilizer for water-in-oil emulsions. | Naturally occurring, These are ingredients initially present in nature, such as elements (Zinc, Gold, or Silver), minerals, or water. Naturally occurring, These are ingredients initially present in nature, such as elements (Zinc, Gold, or Silver), minerals, or water. Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. | Fragrance, Fragrance ingredients add scent to a product or hide ('mask') the undesired aroma of other ingredients. Fragrance, Fragrance ingredients add scent to a product or hide ('mask') the undesired aroma of other ingredients. Flavor, Flavor ingredients bring sweetness to a product or are used to recreate various tastes. Flavor, Flavor ingredients bring sweetness to a product or are used to recreate various tastes. Formula helper
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1.5 | Sodium Hydroxide An ingredient that is able to bring the pH of a product up, thereby making it less harsh on the skin. Sodium Hydroxide An ingredient that is able to bring the pH of a product up, thereby making it less harsh on the skin. | Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. | Formula helper
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1.3 | | Cleansing, Cleansing ingredients, also known as surfactants, clear dirt and buildup from the skin. Cleansing, Cleansing ingredients, also known as surfactants, clear dirt and buildup from the skin. Formula helper
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1 | Hydroxyacetophenone An antioxidant compound that can be found in many plants, although it is manufactured synthetically for skincare purposes. It can boost the preservative action of other conservants. Hydroxyacetophenone An antioxidant compound that can be found in many plants, although it is manufactured synthetically for skincare purposes. It can boost the preservative action of other conservants. | Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. | Antioxidant Antioxidants reduce the oxidative stress caused by free radicals and prevent accelerated skin aging. Antioxidant Antioxidants reduce the oxidative stress caused by free radicals and prevent accelerated skin aging. | |
0.3 | Citric Acid A 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. Citric Acid A 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. | Botanical, Ingredients derived from plants, mosses, and lichens: extracts, oils, powders, juices and other types of processed plant materials. Botanical, Ingredients derived from plants, mosses, and lichens: extracts, oils, powders, juices and other types of processed plant materials. Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. | Exfoliant, Exfoliants remove dead skin cells from the surface of the skin via acid-based chemical reactions (e.g., AHA or BHA). Exfoliant, Exfoliants remove dead skin cells from the surface of the skin via acid-based chemical reactions (e.g., AHA or BHA). Formula helper
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0.3 | | Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. | Colorant Colorants give color to skincare products. Colorant Colorants give color to skincare products. | |
80 Water Function: Formula helper Formula helper
Formula helper Formula helper
Origin: Naturally occurring Naturally occurring These are ingredients initially present in nature, such as elements (Zinc, Gold, or Silver), minerals, or water. Naturally occurring Naturally occurring These are ingredients initially present in nature, such as elements (Zinc, Gold, or Silver), minerals, or water. |
6 Isohexadecane Function: Emollient, Emollient Emollients fill the micro-cracks in the skin and leave it feeling soft and pleasant to the touch. Emollients are often mistakenly perceived as moisturizing ingredients. Emollient, Emollient Emollients fill the micro-cracks in the skin and leave it feeling soft and pleasant to the touch. Emollients are often mistakenly perceived as moisturizing ingredients. Formula helper Formula helper
Formula helper Formula helper
Origin: Petroleum Petroleum Ingredients derived from petroleum, also called crude oil. Crude oil deposits were obtained from the remains of ancient organisms, such as plants, algae, and bacteria. Petroleum Petroleum Ingredients derived from petroleum, also called crude oil. Crude oil deposits were obtained from the remains of ancient organisms, such as plants, algae, and bacteria. |
4 Dipropylene Glycol Function: Fragrance, Fragrance Fragrance ingredients add scent to a product or hide ('mask') the undesired aroma of other ingredients. Fragrance, Fragrance Fragrance ingredients add scent to a product or hide ('mask') the undesired aroma of other ingredients. Formula helper Formula helper
Formula helper Formula helper
Origin: Synthetic Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. |
3 Pentylene Glycol Function: Moisturizing (Humectant), Moisturizing (Humectant) Humectants are moisturizing ingredients that draw moisture to the skin, either from deeper layers or from the environment (when it's humid). Moisturizing (Humectant), Moisturizing (Humectant) Humectants are moisturizing ingredients that draw moisture to the skin, either from deeper layers or from the environment (when it's humid). Preservative, Preservative Preservatives prevent the growth of bacteria and fungi in a product. Preservative, Preservative Preservatives prevent the growth of bacteria and fungi in a product. Formula helper Formula helper
Formula helper Formula helper
Origin: Botanical, Botanical Ingredients derived from plants, mosses, and lichens: extracts, oils, powders, juices and other types of processed plant materials. Botanical, Botanical Ingredients derived from plants, mosses, and lichens: extracts, oils, powders, juices and other types of processed plant materials. Synthetic, Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic, Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Petroleum Petroleum Ingredients derived from petroleum, also called crude oil. Crude oil deposits were obtained from the remains of ancient organisms, such as plants, algae, and bacteria. Petroleum Petroleum Ingredients derived from petroleum, also called crude oil. Crude oil deposits were obtained from the remains of ancient organisms, such as plants, algae, and bacteria. |
2 Sodium Chloride Function: Fragrance, Fragrance Fragrance ingredients add scent to a product or hide ('mask') the undesired aroma of other ingredients. Fragrance, Fragrance Fragrance ingredients add scent to a product or hide ('mask') the undesired aroma of other ingredients. Flavor, Flavor Flavor ingredients bring sweetness to a product or are used to recreate various tastes. Flavor, Flavor Flavor ingredients bring sweetness to a product or are used to recreate various tastes. Formula helper Formula helper
Formula helper Formula helper
Origin: Naturally occurring, Naturally occurring These are ingredients initially present in nature, such as elements (Zinc, Gold, or Silver), minerals, or water. Naturally occurring, Naturally occurring These are ingredients initially present in nature, such as elements (Zinc, Gold, or Silver), minerals, or water. Synthetic Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. |
1.5 Sodium Hydroxide Function: Formula helper Formula helper
Formula helper Formula helper
Origin: Synthetic Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. |
1.3 Poloxamer 182 Function: Cleansing, Cleansing Cleansing ingredients, also known as surfactants, clear dirt and buildup from the skin. Cleansing, Cleansing Cleansing ingredients, also known as surfactants, clear dirt and buildup from the skin. Formula helper Formula helper
Formula helper Formula helper
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1 Hydroxyacetophenone Function: Antioxidant Antioxidant Antioxidants reduce the oxidative stress caused by free radicals and prevent accelerated skin aging. Antioxidant Antioxidant Antioxidants reduce the oxidative stress caused by free radicals and prevent accelerated skin aging. Origin: Synthetic Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. |
0.3 Citric Acid Function: Exfoliant, Exfoliant Exfoliants remove dead skin cells from the surface of the skin via acid-based chemical reactions (e.g., AHA or BHA). Exfoliant, Exfoliant Exfoliants remove dead skin cells from the surface of the skin via acid-based chemical reactions (e.g., AHA or BHA). Formula helper Formula helper
Formula helper Formula helper
Origin: Botanical, Botanical Ingredients derived from plants, mosses, and lichens: extracts, oils, powders, juices and other types of processed plant materials. Botanical, Botanical Ingredients derived from plants, mosses, and lichens: extracts, oils, powders, juices and other types of processed plant materials. Synthetic Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. |
0.3 Green 6 (CI 61565) Function: Colorant Colorant Colorants give color to skincare products. Colorant Colorant Colorants give color to skincare products. Origin: Synthetic Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. |