This Works Deep Sleep Overnight Cleanser Review

This Works Deep Sleep Overnight Cleanser
5.0
/ 10
Moisturizing
10.0 Humectancy icon Humectancy
0.0 Occlusivity icon Occlusivity
Review

Does This Works Deep Sleep Overnight Cleanser Work?

 
According to CreamScan AI's analysis of the ingredient list, here’s what This Works Deep Sleep Overnight Cleanser has to offer:
 
  • Strong humectant moisturizing. This lightweight, humectant-rich product, ideal for oily skin, has a moisturizing rating of 5.0 out of 10.

Key Benefits of This Works Deep Sleep Overnight Cleanser

 
These are the key benefits you can expect from using This Works Deep Sleep Overnight Cleanser:
 

Lightweight Purely Humectant Moisturizing, Ideal for Oily Skin

According to CreamScan analysis, This Works Deep Sleep Overnight Cleanser 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, primarily due to the high content of Glycerin (est. ≈6.0%) and Fructooligosaccharides (est. ≈2.9%).

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.

A Humectant Boost for Any Skincare Routine

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 AI model to incorporate anti-pigmentation, exfoliation and anti-acne ratings.

Things to Be Aware Of: This Works Deep Sleep Overnight Cleanser

 
CreamScan AI identified a few things to consider before adding This Works Deep Sleep Overnight Cleanser to your skincare routine:
 

If It’s Your Only Moisturizer, It Needs to Be Paired with Some Occlusives

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 This Works Deep Sleep Overnight Cleanser 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.

Questionable anti-wrinkle efficacy

If one of your main reasons for choosing This Works Deep Sleep Overnight Cleanser is its potential anti-aging effects, please note that, according to CreamScan analysis, it currently has a zero anti-wrinkle rating.

It contains Copper PCA, an ingredient often marketed as effective in reducing wrinkles. However, the studies supporting the anti-wrinkle claims of Copper PCA provide insufficient evidence of its efficacy according to CreamScan Research Evaluation Standards.

While this does not categorically exclude the possibility that Copper PCA may reduce wrinkles, its efficacy is not supported by convincing, vehicle-controlled, double-blind clinical studies - at least none that were accessible to the CreamScan team at the time of publication.

Therefore, this ingredient does not generate the anti-wrinkle rating.

Moisturizers, when used regularly, are proven to prevent wrinkle formation and even reduce existing wrinkles. Therefore, this product, like any other moisturizer, can deliver some anti-wrinkle effects through its moisturizing action.

Please refer to the Ratings section below for details of the anti-wrinkle rating calculation.

Pros & Cons of This Works Deep Sleep Overnight Cleanser

 
Here’s an overview of the pros and cons of This Works Deep Sleep Overnight Cleanser to help you decide if it’s the right choice for your skincare routine:
 

Pros:

  • Humectant-rich moisturizing ideal for oily skin
  • Lightweight texture
  • A humectant moisturizing boost for any skincare routine

Cons: 

  • Needs occlusives to seal in humectants if used as a standalone moisturizer
  • Questionable anti-wrinkle efficacy

Ingredients

Est. % Ingredient Origin Functions
70
9
6
3
2.9
2.5
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Est. %
Water
Function:
Origin:
Sodium Lauroyl Oat Amino Acids
Function:
Origin:
Glycerin
Function:
Origin:
Dehydroxanthan Gum
Function:
Origin:
Fructooligosaccharides
Function:
Origin:
Beta Vulgaris (Beet) Root Extract
Function:
Origin:
Benzyl Alcohol
Function:
Origin:
Kaolin
Function:
Origin:
Potassium Lactate
Function:
Origin:
Ethylhexylglycerin
Function:
Origin:
Citric Acid
Function:
Origin:
Saccharide Isomerate
Function:
Origin:
Fragrance
Function:
Origin:
Copper PCA
Function:
Origin:
Lactic Acid
Function:
Origin:
Linalool
Function:
Origin:
Cinnamomum Camphora Linalooliferum Wood Oil
Function:
Origin:
Lavandula Angustifolia (Lavender) Oil
Function:
Origin:
Ormenis Multicaulis Flower Oil
Function:
Origin:
Pinus Mugo Leaf Oil
Function:
Origin:
Sodium Hyaluronate
Function:
Origin:
Vetiveria Zizanoides Root Oil
Function:
Origin:
Silk Extract
Function:
Origin:
Sodium Citrate
Function:
Origin:
Sodium Benzoate
Function:
Origin:

Ratings

All humectants
10.7
6
2.9
0.3
0.3
0.3
0.3
0.3
0.3
Benchmark
10
All occlusives
0.0
None
Benchmark
20
Moisturizing rating
5.0
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 10.7 10
10.0
6
2.9
0.3
0.3
0.3
0.3
0.3
0.3
Occlusivity All occlusives 0.0 20
0.0
None
Moisturizing rating
5.0
Ingredient Est. % Benchmark Humectancy
6
2.9
0.3
0.3
0.3
0.3
0.3
0.3
All humectants 10.7 10
10
All humectants
10.7
6
2.9
0.3
0.3
0.3
0.3
0.3
0.3
Benchmark
10
Ingredient Est. % Benchmark Occlusivity
None
All occlusives 0.0 20
0.0
All occlusives
0.0
None
Benchmark
20
Ingredient
Ingredient anti-wrinkle power
when present at, %
in this formula est. %
Rating
n/a
- 0.3 -
Total
0
Copper PCA
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
0.3
Anti-wrinkle rating
0
Ingredient Est. % Benchmark
Rich in Antioxidants
2.5
0.3
All antioxidants 2.8 3 No
All antioxidants
2.8
Beta Vulgaris (Beet) Root Extract
2.5
Sodium Hyaluronate
0.3
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
None
All soothing 0 5 No
All soothing
0
None
Benchmark
5

Ingredients explained

Water
Est. %70
Function
Origin
WaterThe 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.
Sodium Lauroyl Oat Amino Acids
Est. %9
Function
Origin
Sodium Lauroyl Oat Amino Acids
Glycerin
Est. %6
Function
Origin
Glycerin

The most popular moisturizing ingredient in the world. It is a powerful humectant – cheap yet very effective.

Dehydroxanthan Gum
Est. %3
Function
Origin
Dehydroxanthan Gum
Fructooligosaccharides
Est. %2.9
Function
Origin
FructooligosaccharidesA derivative a fructose that moisturizes skin by drawing water to the surface of the skin.
Beta Vulgaris (Beet) Root Extract
Est. %2.5
Function
Origin
Beta Vulgaris (Beet) Root ExtractA purple-red extract with antioxidant activity that is obtained from red beetroot.
Benzyl Alcohol
Est. %0.3
Function
Origin
Benzyl Alcohol

A multifunctional ingredient that is supplied as a clear, colorless liquid. Its main function is as a flavoring agent and fragrance. It also acts as a broad-spectrum preservative, solvent, and viscosity-controlling agent that thins the product.

Kaolin
Est. %0.3
Function
Origin
KaolinA type of mineral clay milled into a white, very fine powder. It is able to absorb sweat and oil, which then helps to keep the skin matte. The larger particles of kaolin are used in skin scrubs as an abrasive ingredient.
Potassium Lactate
Est. %0.3
Function
Origin
Potassium Lactate
Ethylhexylglycerin
Est. %0.3
Function
Origin
EthylhexylglycerinA preservative booster derived from glycerin. It is commonly paired with other preservatives to improve their efficacy. Ethylhexylglycerin is also a humectant due to its chemical base of glycerin.
Citric Acid
Est. %0.3
Function
Origin
Citric AcidA 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.
Saccharide Isomerate
Est. %0.3
Function
Origin
Saccharide IsomerateA naturally-derived humectant that provides moisturization at low levels and is less sticky than other humectants like glycerin.
Fragrance
Est. %0.3
Function
Origin
FragranceUnder trade secret law, manufacturers have the right not to disclose what exactly went into the fragrance and use the unspecific word Fragrance or Parfum instead. Many fragrances are highly allergenic.
Copper PCA
Est. %0.3
Function
Origin
Copper PCA

A blue-green synthetic salt of copper and pyrrolidone carboxylic acid. It has antimicrobial properties and may be able to help with wound healing and sebum control, although the studies are lacking.

Lactic Acid
Est. %0.3
Function
Origin
Lactic AcidThe most popular AHA in skincare and less irritating than glycolic acid. It can be naturally found in sour milk. It is a humectant moisturizing, pH stabilizing, and gently exfoliating ingredient, able to soften dry, cracked, and peeling skin.
Linalool
Est. %0.3
Function
Origin
LinaloolA fragrant, volatile compound naturally present in many essential oils. It has a pleasant scent and is often used in skincare products as a fragrance. People with sensitive skin should try to avoid it, or at least do a patch test before using it.
Cinnamomum Camphora Linalooliferum Wood Oil
Est. %0.3
Function
Origin
Cinnamomum Camphora Linalooliferum Wood Oil
Lavandula Angustifolia (Lavender) Oil
Est. %0.3
Function
Origin
Lavandula Angustifolia (Lavender) OilAn essential oil derived from common, or true, lavender. It is used in skincare for its lovely, calming scent. Like all essential oils, however, it may cause a contact skin allergy in more sensitive individuals.
Ormenis Multicaulis Flower Oil
Est. %0.3
Function
Origin
Ormenis Multicaulis Flower Oil
Pinus Mugo Leaf Oil
Est. %0.3
Function
Origin
Pinus Mugo Leaf Oil
Sodium Hyaluronate
Est. %0.3
Function
Origin
Sodium Hyaluronate

A sodium salt of famous hyaluronic acid. A potent humectant that hydrates the skin, supports collagen function, and fills out small wrinkles. Sodium hyaluronate also offers soothing and antioxidant properties.

Vetiveria Zizanoides Root Oil
Est. %0.3
Function
Origin
Vetiveria Zizanoides Root Oil
Silk Extract
Est. %0.3
Function
Origin
Silk Extract
Sodium Citrate
Est. %0.3
Function
Origin
Sodium CitrateA salt of citric acid that has a salty and tart flavor and is used as a fragrance. It is mildly basic, meaning that its addition to a skincare product can adjust the pH upward.
Sodium Benzoate
Est. %0.3
Function
Origin
Sodium BenzoateA preservative that usually works in combination with other preservatives. It has to be at low pH (<5.5) to be effective.