According to CreamScan analysis, Obagi Rx C-Clarifying Serum - Normal to Dry is quite moisturizing, with a moisturizing rating of 5.0 out of 10.
Is it more humectant or occlusive? It is purely humectant. It has zero occlusivity (we didn't find any occlusive ingredients on the ingredient list) and a maximum humectancy of 10 out of 10, entirely due to the high content of Propylene Glycol (est. ≈50.7%).
This humectant-rich product, when used alone as a moisturizer, is ideal for oily skin, providing significant hydration in a lightweight, fast-absorbing formula without any occlusive ingredients.
Tip: Certain studies suggest that humectants alone may not effectively moisturize the skin. If you use this product as your only moisturizer, we recommend following it with one that contains at least some occlusive ingredients.
But it’s not limited to oily skin - such a humectant boost will also positively contribute to the moisturizing efficacy of any skincare routine when used as a step before applying the main moisturizer. This type of formulation is typically used in serums, where a light, fast-absorbing texture is key.
Please refer to the Ratings section below for details of the moisturizing rating calculation.
According to CreamScan analysis, Obagi Rx C-Clarifying Serum - Normal to Dry has a modest level of anti-wrinkle efficacy, rated 2.5 out of 10.
Please refer to the Ratings section below for details of the anti-wrinkle rating calculation.
We estimate that Obagi Rx C-Clarifying Serum - Normal to Dry is rich (> 3%) in antioxidants, specifically Ascorbic Acid (est. ≈10.0%) and Hydroquinone (est. ≈4.0%).
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.
Please note that this is not a complete list of benefits. We are in the process of enhancing our AI model to incorporate anti-pigmentation, exfoliation and anti-acne ratings.
While humectants are highly effective at attracting water to the skin, studies (J. N. Kraft, C. W. Lynde) suggest they may not be efficient when used alone.
One major drawback of purely humectant moisturization is that the water attracted by humectants to the upper layers of the skin can evaporate completely into the environment through transepidermal water loss (TEWL). Adding occlusive ingredients helps seal this moisture into the skin and prevent further water loss.
If you’re using Obagi Rx C-Clarifying Serum - Normal to Dry as your only moisturizer, consider pairing it with one that contains at least some occlusive ingredients, such as oils, butters, or silicones. These work alongside humectants to create a protective barrier, locking in hydration and ensuring longer-lasting moisturization. The amount of occlusive needed depends on your skin type - the drier the skin, the more occlusives it requires.
If this product is used not as a standalone moisturizer but as part of your skincare routine, such as a toner or serum, it should be applied before your main moisturizer (unless it's a sunscreen), which will provide the necessary occlusivity on top of it.
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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50.7 | Propylene Glycol A clear, thick, odorless liquid of synthetic origin. Its main function is to stabilize cosmetic products exposed to varying temperatures. It is also a moderately strong humectant with similar properties to glycerin. Propylene Glycol A clear, thick, odorless liquid of synthetic origin. Its main function is to stabilize cosmetic products exposed to varying temperatures. It is also a moderately strong humectant with similar properties to glycerin. | 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. | 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). 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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25.1 | 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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10 Verified concentration of an ingredient as indicated on its package, in the ingredient list, or on the official website. Verified concentration of an ingredient as indicated on its package, in the ingredient list, or on the official website. | Ascorbic Acid Also known as vitamin C, this multi-benefit ingredient has proven anti-wrinkle, antioxidant, and anti-pigmentation efficacy. It degrades easily when exposed to air and light, so it requires proper packaging to maintain its stability. Ascorbic Acid Also known as vitamin C, this multi-benefit ingredient has proven anti-wrinkle, antioxidant, and anti-pigmentation efficacy. It degrades easily when exposed to air and light, so it requires proper packaging to maintain its stability. | 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. | 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. Anti-Wrinkle, Anti-wrinkle ingredients prevent the formation or reduce the appearance of wrinkles. Anti-Wrinkle, Anti-wrinkle ingredients prevent the formation or reduce the appearance of wrinkles. Anti-Pigmentation, Anti-pigmentation ingredients help to even skin tone by reducing the intensity of dark spots and hyperpigmentation. Anti-Pigmentation, Anti-pigmentation ingredients help to even skin tone by reducing the intensity of dark spots and hyperpigmentation. 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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6.8 | Propylene Carbonate A derivative of propylene glycol that is used most frequently as a solvent. Additionally, propylene carbonate serves as a viscosity controlling agent reducing the thickness of the products it is added to. Propylene Carbonate A derivative of propylene glycol that is used most frequently as a solvent. Additionally, propylene carbonate serves as a viscosity controlling agent reducing the thickness of the products it is added to. | 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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4 Verified concentration of an ingredient as indicated on its package, in the ingredient list, or on the official website. Verified concentration of an ingredient as indicated on its package, in the ingredient list, or on the official website. | Hydroquinone Description is coming soon Hydroquinone Description is coming soon | 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. Anti-Pigmentation, Anti-pigmentation ingredients help to even skin tone by reducing the intensity of dark spots and hyperpigmentation. Anti-Pigmentation, Anti-pigmentation ingredients help to even skin tone by reducing the intensity of dark spots and hyperpigmentation. 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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3.4 | Sodium Lauryl Sulfate A synthetic soap-like ingredient that is used in cleansing products. It foams very well and is able to remove dirt and oil from the skin. It can be irritating. Sodium Lauryl Sulfate A synthetic soap-like ingredient that is used in cleansing products. It foams very well and is able to remove dirt and oil from the skin. It can be irritating. | 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. | 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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50.7 Propylene 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). 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: 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. |
25.1 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. |
10 Verified concentration of an ingredient as indicated on its package, in the ingredient list, or on the official website. Verified concentration of an ingredient as indicated on its package, in the ingredient list, or on the official website. Ascorbic Acid 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. Anti-Wrinkle, Anti-Wrinkle Anti-wrinkle ingredients prevent the formation or reduce the appearance of wrinkles. Anti-Wrinkle, Anti-Wrinkle Anti-wrinkle ingredients prevent the formation or reduce the appearance of wrinkles. Anti-Pigmentation, Anti-Pigmentation Anti-pigmentation ingredients help to even skin tone by reducing the intensity of dark spots and hyperpigmentation. Anti-Pigmentation, Anti-Pigmentation Anti-pigmentation ingredients help to even skin tone by reducing the intensity of dark spots and hyperpigmentation. 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: 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. |
6.8 Propylene Carbonate 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. |
4 Verified concentration of an ingredient as indicated on its package, in the ingredient list, or on the official website. Verified concentration of an ingredient as indicated on its package, in the ingredient list, or on the official website. Hydroquinone 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. Anti-Pigmentation, Anti-Pigmentation Anti-pigmentation ingredients help to even skin tone by reducing the intensity of dark spots and hyperpigmentation. Anti-Pigmentation, Anti-Pigmentation Anti-pigmentation ingredients help to even skin tone by reducing the intensity of dark spots and hyperpigmentation. 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: |
3.4 Sodium Lauryl Sulfate 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
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. |