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According to CreamScan analysis, Paula's Choice Skin Perfecting 2% BHA Liquid Exfoliant 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, due to the high content of Methylpropanediol (est. ≈7.5%) and Butylene Glycol (est. ≈5.0%).
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.
📌 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.
📌 Please note that this is not a complete list of benefits. We are in the process of enhancing our 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 Paula's Choice Skin Perfecting 2% BHA Liquid Exfoliant 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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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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7.5 | Methylpropanediol ![]() Methylpropanediol is a unique glycol that contains two primary hydroxyl groups. That makes methylpropanediol a powerful humectant and an excellent solvent. Methylpropanediol ![]() Methylpropanediol is a unique glycol that contains two primary hydroxyl groups. That makes methylpropanediol a powerful humectant and an excellent solvent. | 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). Formula helper
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5 | Butylene Glycol ![]() A 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. Butylene Glycol ![]() A 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. | 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). 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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2 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. | Salicylic Acid ![]() This effective peeling and anti-inflammatory BHA is used as an anti-acne agent and works by breaking down the junctions between dead skin cells. This results in the peeling of dead skin and the unclogging of pores. Salicylic Acid ![]() This effective peeling and anti-inflammatory BHA is used as an anti-acne agent and works by breaking down the junctions between dead skin cells. This results in the peeling of dead skin and the unclogging of pores. | 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. | Anti-Acne Anti-acne agents treat acne blemishes, blackheads, and whiteheads. Anti-Acne Anti-acne agents treat acne blemishes, blackheads, and whiteheads. 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). Soothing Soothing ingredients reduce the signs of sensitivity in irritated and inflamed skin. This includes anti-inflammatory ingredients, anti-itch agents, and topical analgesics. Soothing Soothing ingredients reduce the signs of sensitivity in irritated and inflamed skin. This includes anti-inflammatory ingredients, anti-itch agents, and topical analgesics. Anti-Seborrheic Anti-seborrheic ingredients help to treat seborrheic dermatitis. Anti-Seborrheic Anti-seborrheic ingredients help to treat seborrheic dermatitis. 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. 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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1.9 | Polysorbate 20 ![]() A viscous, amber-colored liquid that functions as a solubilizer to disperse small amounts of oil into a large water phase. Polysorbate 20 is frequently used to solubilize fragrance oils into water-based emulsions. Polysorbate 20 ![]() A viscous, amber-colored liquid that functions as a solubilizer to disperse small amounts of oil into a large water phase. Polysorbate 20 is frequently used to solubilize fragrance oils into water-based emulsions. | 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. | 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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1.8 | Camellia Oleifera Leaf Extract ![]() An emollient extract derived from the leaves of the Tea-oil Camellia, which is native to Southeast Asia. It contains astringent and wound-healing tannins that create a tightening feeling on the skin and can speed up the healing process of small cuts. Camellia Oleifera Leaf Extract ![]() An emollient extract derived from the leaves of the Tea-oil Camellia, which is native to Southeast Asia. It contains astringent and wound-healing tannins that create a tightening feeling on the skin and can speed up the healing process of small cuts. | 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. | 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. Soothing Soothing ingredients reduce the signs of sensitivity in irritated and inflamed skin. This includes anti-inflammatory ingredients, anti-itch agents, and topical analgesics. Soothing Soothing ingredients reduce the signs of sensitivity in irritated and inflamed skin. This includes anti-inflammatory ingredients, anti-itch agents, and topical analgesics. Astringent Astringent ingredients provide the skin with a tightened feeling, help to reduce the appearance of large pores, and assist in the healing of small cuts and wounds. Astringent Astringent ingredients provide the skin with a tightened feeling, help to reduce the appearance of large pores, and assist in the healing of small cuts and wounds. | |
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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0.3 | Tetrasodium EDTA ![]() One of the most common synthetic chelators. It can reduce the 'hardness' of water and so is often used in rinse-off products. Tetrasodium EDTA ![]() One of the most common synthetic chelators. It can reduce the 'hardness' of water and so is often used in rinse-off 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. | Formula helper
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80 ![]() Water Function: Formula helper Formula helper
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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. |
7.5 ![]() Methylpropanediol 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). 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. |
5 ![]() Butylene 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. 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 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. ![]() Salicylic Acid Function: Anti-Acne, Anti-Acne Anti-acne agents treat acne blemishes, blackheads, and whiteheads. Anti-Acne, Anti-Acne Anti-acne agents treat acne blemishes, blackheads, and whiteheads. 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). Soothing, Soothing Soothing ingredients reduce the signs of sensitivity in irritated and inflamed skin. This includes anti-inflammatory ingredients, anti-itch agents, and topical analgesics. Soothing, Soothing Soothing ingredients reduce the signs of sensitivity in irritated and inflamed skin. This includes anti-inflammatory ingredients, anti-itch agents, and topical analgesics. Anti-Seborrheic, Anti-Seborrheic Anti-seborrheic ingredients help to treat seborrheic dermatitis. Anti-Seborrheic, Anti-Seborrheic Anti-seborrheic ingredients help to treat seborrheic dermatitis. 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. 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: 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. |
1.9 ![]() Polysorbate 20 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: 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. |
1.8 ![]() Camellia Oleifera Leaf Extract 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. Soothing, Soothing Soothing ingredients reduce the signs of sensitivity in irritated and inflamed skin. This includes anti-inflammatory ingredients, anti-itch agents, and topical analgesics. Soothing, Soothing Soothing ingredients reduce the signs of sensitivity in irritated and inflamed skin. This includes anti-inflammatory ingredients, anti-itch agents, and topical analgesics. Astringent Astringent Astringent ingredients provide the skin with a tightened feeling, help to reduce the appearance of large pores, and assist in the healing of small cuts and wounds. Astringent Astringent Astringent ingredients provide the skin with a tightened feeling, help to reduce the appearance of large pores, and assist in the healing of small cuts and wounds. 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. |
1.5 ![]() Sodium Hydroxide Function: Formula helper Formula helper
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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 ![]() Tetrasodium EDTA 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. |