Yves Saint Laurent Forever Youth Liberator Serum-in-Creme Review

Yves Saint Laurent Forever Youth Liberator Serum-in-Creme
5.2
/ 10
Moisturizing
7.9 Humectancy icon Humectancy
2.5 Occlusivity icon Occlusivity
Ingredients

Yves Saint Laurent Forever Youth Liberator Serum-in-Creme Ingredients

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Full Ingredient List (INCI):

Water, Propylene Glycol, Dimethicone, Hydroxypropyl Tetrahydropyrantriol, Isohexadecane, Cyclohexasiloxane, Glycerin, Synthetic Wax, Dimethicone/PEG-10/15 Crosspolymer, Aluminum Starch Octenylsuccinate, Vaccinium Myrtillus Fruit Extract, Rhamnose, Adenosine, Magnesium Sulfate, Chondrus Crispus, Disodium EDTA, Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone, Ethylhexyl Hydroxystearate, Acrylates Copolymer, Phenoxyethanol, Red 4 (CI 14700), Yellow 5 (CI 19140), Blue 1 (CI 42090), Bismuth Oxychloride (CI 77163), Linalool, Geraniol, Alpha-Isomethyl Ionone, Coumarin, Limonene, Citronellol, Fragrance
Review

Does Yves Saint Laurent Forever Youth Liberator Serum-in-Creme Work?

 
According to CreamScan's analysis of the ingredient list, here’s what Yves Saint Laurent Forever Youth Liberator Serum-in-Creme has to offer:
 
Moderate moisturizing. It has a moisturizing rating of 5.2 out of 10.

  

Key Benefits of Yves Saint Laurent Forever Youth Liberator Serum-in-Creme

 
These are the key benefits you can expect from using Yves Saint Laurent Forever Youth Liberator Serum-in-Creme:
 

🔵 Lightweight Moisturizer Well-Suited for Combination and Oily Skin

According to CreamScan analysis, Yves Saint Laurent Forever Youth Liberator Serum-in-Creme is quite moisturizing, with a moisturizing rating of 5.2 out of 10.

Is it more humectant or occlusive? Significantly more humectant. It has a low occlusivity of 2.5 out of 10 and a high humectancy of 7.9 out of 10, primarily due to the high content of Propylene Glycol (est. ≈6.0%).

This type of moisturizer is well-suited for people with combination and oily skin who want significant hydration in a relatively lightweight, non-greasy formula. It combines a substantial amount of humectants with a limited amount of occlusive to enhance moisturizing efficacy without feeling too heavy.

This product may also be an option for people with normal skin who prefer fast-absorbing textures, as it balances significant moisturizing potential with a relatively lightweight texture.

💧 A Humectant Enhancement for Any Skincare Routine

But it’s not limited to combination and oily skin - such a humectant enhancement 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.

Things to Be Aware Of: Yves Saint Laurent Forever Youth Liberator Serum-in-Creme

 
CreamScan identified a few things to consider before adding Yves Saint Laurent Forever Youth Liberator Serum-in-Creme to your skincare routine:
 

⚠️ Questionable anti-wrinkle efficacy

If one of your main reasons for choosing Yves Saint Laurent Forever Youth Liberator Serum-in-Creme is its potential anti-aging effects, please note that, according to CreamScan analysis, it currently has a zero anti-wrinkle rating.

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

While this does not categorically rule out the possibility that Adenosine may reduce wrinkles, its efficacy is not supported by convincing, vehicle-controlled, double-blind clinical studies - at least none that were available 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 Yves Saint Laurent Forever Youth Liberator Serum-in-Creme

 
Here’s an overview of the pros and cons of Yves Saint Laurent Forever Youth Liberator Serum-in-Creme to help you decide if it’s the right choice for your skincare routine:
 

🟩 Pros:

✅ When used alone: Provides humectant-rich moisturizing well-suited for combination and oily skin
Also an option for people with normal skin who prefer fast-absorbing textures
✅ As part of a routine: A humectant moisturizing enhancement, beneficial for any skin type
✅ Lightweight texture
 

⭕ Cons: 

⚠️ Questionable anti-wrinkle efficacy
   

Summary: Yves Saint Laurent Forever Youth Liberator Serum-in-Creme

 
Based on the ingredient list analysis, CreamScan AI suggests that Yves Saint Laurent Forever Youth Liberator Serum-in-Creme
, when used alone, delivers lightweight, humectant-rich moisturizing, well-suited for combination and oily skin. It's also an option for those with normal skin who prefer fast-absorbing textures. As part of a moisturizing routine, it provides a humectant enhancement, beneficial for all skin types.
 
That said, there are some things about Yves Saint Laurent Forever Youth Liberator Serum-in-Creme worth noting.
 
If one of your main reasons for considering Yves Saint Laurent Forever Youth Liberator Serum-in-Creme is its potential anti-aging effects, please note that, according to CreamScan analysis, its anti-wrinkle efficacy is questionable. None of the ingredients in this product provide substantial evidence of their anti-wrinkle efficacy according to CreamScan Research Evaluation Standards.
 
📌 Fact check. At CreamScan, we are committed to accuracy and fairness. If you spot any errors or something that doesn’t seem right, please click here to let us know. We regularly update the ingredient lists and monitor the latest research on ingredient efficacy to ensure that our information remains as complete and precise as possible. The information provided here is for informational purposes only and does not substitute professional advice. We do not guarantee the efficacy or safety of any product, as individual results may vary.

 

Ingredient Breakdown

Est. % Ingredient Origin Functions
75
6
4
3
2
1.5
1.3
1
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
0.3
0.3
0.3
0.3
Est. %
Water
Function:
Origin:
Propylene Glycol
Function:
Origin:
Dimethicone
Function:
Origin:
Hydroxypropyl Tetrahydropyrantriol
Function:
Origin:
Isohexadecane
Function:
Origin:
Cyclohexasiloxane
Function:
Origin:
Glycerin
Function:
Origin:
Synthetic Wax
Function:
Origin:
Dimethicone/PEG-10/15 Crosspolymer
Function:
Origin:
Aluminum Starch Octenylsuccinate
Function:
Origin:
Vaccinium Myrtillus Fruit Extract
Function:
Origin:
Rhamnose
Function:
Origin:
Adenosine
Function:
Origin:
Magnesium Sulfate
Function:
Origin:
Chondrus Crispus
Function:
Origin:
Disodium EDTA
Function:
Origin:
Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone
Function:
Origin:
Ethylhexyl Hydroxystearate
Function:
Origin:
Acrylates Copolymer
Function:
Origin:
Phenoxyethanol
Function:
Origin:
Red 4 (CI 14700)
Function:
Origin:
Yellow 5 (CI 19140)
Function:
Origin:
Blue 1 (CI 42090)
Function:
Origin:
Bismuth Oxychloride (CI 77163)
Function:
Origin:
Linalool
Function:
Origin:
Geraniol
Function:
Origin:
Alpha-Isomethyl Ionone
Function:
Origin:
Coumarin
Function:
Origin:
Limonene
Function:
Origin:
Citronellol
Function:
Origin:
Fragrance
Function:
Origin:

Ratings

All humectants
7.9
6
1.3
0.3
0.3
Benchmark
10
All occlusives
5.0
4.0
1.0
Benchmark
20
Moisturizing rating
5.2
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 7.9 10
7.9
6
1.3
0.3
0.3
Occlusivity All occlusives 5.0 20
2.5
4.0
1.0
Moisturizing rating
5.2
Ingredient Est. % Benchmark Humectancy
6
1.3
0.3
0.3
All humectants 7.9 10
7.9
All humectants
7.9
6
1.3
0.3
0.3
Benchmark
10
Ingredient Est. % Benchmark Occlusivity
4
1
All occlusives 5.0 20
2.5
All occlusives
5.0
4.0
1.0
Benchmark
20
Ingredient
Ingredient anti-wrinkle power
when present at, %
in this formula est. %
Rating
n/a
- 0.3 -
Total
0
Adenosine
-
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
0.3
All antioxidants 0.3 3 No
All antioxidants
0.3
Vaccinium Myrtillus Fruit Extract
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. %75
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.
Propylene Glycol
Est. %6
Function
Origin
Propylene GlycolA 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.
Dimethicone
Est. %4
Function
Origin
DimethiconeThe most common silicone in skincare. It forms a silky, smooth film on the skin’s surface and can help to prevent water loss. It also aids in wound healing and can treat and soften scars. Dimethicone is considered to be very safe for use.
Hydroxypropyl Tetrahydropyrantriol
Est. %3
Function
Origin
Hydroxypropyl Tetrahydropyrantriol
Isohexadecane
Est. %2
Function
Origin
IsohexadecaneA 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.
Cyclohexasiloxane
Est. %1.5
Function
Origin
CyclohexasiloxaneA clear silicone fluid with very low viscosity that is commonly used as a solvent and emollient. It has excellent spreadability, rubs in quickly, and leaves a silky smooth after-feel on the skin.
Glycerin
Est. %1.3
Function
Origin
Glycerin

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

Synthetic Wax
Est. %1
Function
Origin
Synthetic Wax
Dimethicone/PEG-10/15 Crosspolymer
Est. %0.3
Function
Origin
Dimethicone/PEG-10/15 CrosspolymerA self-emulsifying surfactant, which means that it can help facilitate the formation of water-in-silicone emulsions. This results in lightweight formulas with a soft finish. It can also act as a film-former and thickener.
Aluminum Starch Octenylsuccinate
Est. %0.3
Function
Origin
Aluminum Starch OctenylsuccinateAn absorbent that takes in oils from the skin to reduce the oily sheen. It can also absorb oils from the skincare product itself, resulting in a softer, less greasy product, normally with better spreadability and less tack.
Vaccinium Myrtillus Fruit Extract
Est. %0.3
Function
Origin
Vaccinium Myrtillus Fruit ExtractAn extract derived from the berries of the bilberry plant, sometimes called European blueberry. It is rich in antioxidant anthocyanins and astringent tannins.
Rhamnose
Est. %0.3
Function
Origin
RhamnoseA naturally occurring deoxy sugar that replenishes water levels in the skin.
Adenosine
Est. %0.3
Function
Origin
Adenosine

A key molecule responsible for energy transportation, signaling, and enzyme activity. Adenosine is a popular anti-wrinkle ingredient, however, the key study about its anti-wrinkle efficacy (1) does not meet CreamScan Research Evaluation Standards as it is not double-blind.

Magnesium Sulfate
Est. %0.3
Function
Origin
Magnesium SulfateA naturally occurring mineral that is commonly used in skincare products as a bulking agent. It helps to control the viscosity of products by making them thicker.
Chondrus Crispus
Est. %0.3
Function
Origin
Chondrus CrispusAn ingredient obtained from the red marine algae Irish moss. It contains a gel-forming algal polysaccharide carrageenan and is a rich source of antimicrobial iodine and sulfur. It also offers various antioxidants.
Disodium EDTA
Est. %0.3
Function
Origin
Disodium EDTAA synthetic chelator that helps to maintain the look and smell of a product by 'locking up' troublesome metal ions.
Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone
Est. %0.3
Function
Origin
Lauryl PEG-9 Polydimethylsiloxyethyl DimethiconeA powerful emulsifier with the unique trait of being able to work in both oil- and silicone-based formulas. It can also function as a thickener in low concentrations.
Ethylhexyl Hydroxystearate
Est. %0.3
Function
Origin
Ethylhexyl Hydroxystearate
Acrylates Copolymer
Est. %0.3
Function
Origin
Acrylates CopolymerA highly functional synthetic ingredient that forms a protective layer on the skin and reduces static buildup. It gives an emollient feel to the product, including a silky after-feel.
Phenoxyethanol
Est. %0.3
Function
Origin
PhenoxyethanolThe most frequently used preservative in skincare. It is a clear, oil-like liquid synthetic substance that protects products from harmful bacteria and yeast, whilst still leaving skin microflora unharmed. It is confirmed by research to be harmless.
Red 4 (CI 14700)
Est. %0.3
Function
Origin
Red 4 (CI 14700)A synthetic dye that is also known as FD&C Red No. 4. This colorant produces a warm red hue that has an orange or yellow undertone.
Yellow 5 (CI 19140)
Est. %0.3
Function
Origin
Yellow 5 (CI 19140)A bright yellow colorant that is often also listed as FD&C Yellow 5.
Blue 1 (CI 42090)
Est. %0.3
Function
Origin
Blue 1 (CI 42090)A synthetic dye commonly known as Brilliant Blue FCF that produces rich blue colors for various cosmetic uses. FD&C Blue #1 can also be found in foods, medications, and dietary supplements, as it is considered non-toxic and safe for use.
Bismuth Oxychloride (CI 77163)
Est. %0.3
Function
Origin
Bismuth Oxychloride (CI 77163)An inorganic colorant that gives off a pearly white sheen. Its appearance is a result of light reflecting and refracting through the layers it forms.
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.
Geraniol
Est. %0.3
Function
Origin
Geraniol

A fragrant, volatile, plant-based, liquid chemical that can be naturally found in many essential oils (specifically rose, palmarosa, citronella). It has a rose-like scent. It is a potential irritant and may cause an allergic reaction in some people.

Alpha-Isomethyl Ionone
Est. %0.3
Function
Origin
Alpha-Isomethyl IononeA fragrance ingredient that is supplied as a pale, yellow liquid. The scent it emits is very clean and features notes of violet and orris. Alpha-isomethyl is also used as a flavoring agent in lip care products and even in some foods and drinks.
Coumarin
Est. %0.3
Function
Origin
Coumarin

A plant-based fragrant compound that occurs in sweet-smelling grass, sweet woodruff, and sweet clover. It has a sweet and vanilla-like scent in high concentrations and a similar scent to freshly mowed grass in low concentrations.

Limonene
Est. %0.3
Function
Origin
Limonene

One of the most used fragrances in skincare products. It is produced from the peels of citrus fruits and has a fresh, pleasant, citrusy smell. People who are sensitive to citrus should try to avoid it, or at least do a patch test before using it.

Citronellol
Est. %0.3
Function
Origin
Citronellol

A fragrant compound found naturally in many essential oils (mainly lemongrass). It can have a lemon or a rose scent. People with sensitive skin should try to avoid products with citronellol, or at least do a patch test before using it.

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.