e.l.f. Cosmetics Hydrating Primer Serum Review

e.l.f. Cosmetics Hydrating Primer Serum
5.0
/ 10
Moisturizing
10.0 Humectancy icon Humectancy
0.0 Occlusivity icon Occlusivity
Rich
in Antioxidants
Review

Does e.l.f. Cosmetics Hydrating Primer Serum Work?

 
According to CreamScan AI's analysis of the ingredient list, here’s what e.l.f. Cosmetics Hydrating Primer Serum 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.
✅ Antioxidant protection

  

Key Benefits of e.l.f. Cosmetics Hydrating Primer Serum

 
These are the key benefits you can expect from using e.l.f. Cosmetics Hydrating Primer Serum:
 

🔵 Lightweight Purely Humectant Moisturizing, Ideal for Oily Skin

According to CreamScan analysis, e.l.f. Cosmetics Hydrating Primer Serum 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%), Propylene Glycol (est. ≈4.0%) and Soluble Collagen (est. ≈3.0%).

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.

💧 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.

🍀 Rich in Skin-Protecting Antioxidants

We estimate that e.l.f. Cosmetics Hydrating Primer Serum is rich (> 3%) in antioxidants, specifically Sodium Hyaluronate (est. ≈2.0%).

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.

Things to Be Aware Of: e.l.f. Cosmetics Hydrating Primer Serum

 
CreamScan AI identified a few things to consider before adding e.l.f. Cosmetics Hydrating Primer Serum 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 e.l.f. Cosmetics Hydrating Primer Serum 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.

Pros & Cons of e.l.f. Cosmetics Hydrating Primer Serum

 
Here’s an overview of the pros and cons of e.l.f. Cosmetics Hydrating Primer Serum to help you decide if it’s the right choice for your skincare routine:
 

🟩 Pros:

✅ When used alone: Provides humectant-rich moisturizing ideal for oily skin
✅ As part of a routine: A humectant moisturizing boost, beneficial for any skin type
✅ Lightweight texture
✅ Rich in antioxidants that combat oxidative stress associated with accelerated skin aging and defend against environmental damage
 

⭕ Cons: 

⚠️ Only if used as a standalone moisturizer - it needs to be paired with occlusives to seal in humectants
   

Summary: e.l.f. Cosmetics Hydrating Primer Serum

 
Based on the ingredient list analysis, CreamScan AI suggests that e.l.f. Cosmetics Hydrating Primer Serum
, when used alone, delivers lightweight, humectant-rich moisturizing, making it ideal for oily skin. As part of a moisturizing routine, it provides a humectant boost, beneficial for all skin types.
 
With its high antioxidant content, e.l.f. Cosmetics Hydrating Primer Serum helps protect against free radical damage and offers multiple benefits for all skin types, including preventing premature aging, defending against environmental damage, and calming inflammation.
 
That said, there are some things about e.l.f. Cosmetics Hydrating Primer Serum worth noting.
 
Looking at its moisturizing profile, we found that it doesn’t contain any occlusive ingredients, potentially allowing the moisture attracted to the skin by humectants to evaporate. Therefore, if it’s used as the only moisturizer in a routine, it’s recommended to pair it with one that contains at least some occlusive ingredients, such as oils, butters, or silicones.
 
📌 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.

 

Ingredients

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
Est. %
Water
Function:
Origin:
Glycerin
Function:
Origin:
Propylene Glycol
Function:
Origin:
Soluble Collagen
Function:
Origin:
Sodium Hyaluronate
Function:
Origin:
Tremella Fuciformis Polysaccharide
Function:
Origin:
Tocopheryl Acetate
Function:
Origin:
Aloe Barbadensis Leaf Extract
Function:
Origin:
Phenoxyethanol
Function:
Origin:
PPG-10 Methyl Glucose Ether
Function:
Origin:
PEG-180
Function:
Origin:
PEG-32
Function:
Origin:
Xanthan Gum
Function:
Origin:
Carbomer
Function:
Origin:
Ethylhexylglycerin
Function:
Origin:
Tromethamine
Function:
Origin:
Caprylyl Glycol
Function:
Origin:
Disodium EDTA
Function:
Origin:
Coceth-7
Function:
Origin:
PPG-1-PEG-9 Lauryl Glycol Ether
Function:
Origin:
PEG-40 Hydrogenated Castor Oil
Function:
Origin:
Butylene Glycol
Function:
Origin:

Ratings

All humectants
17.5
6
4
3
2
1
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 17.5 10
10.0
6
4
3
2
1
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
4
3
2
1
0.3
0.3
0.3
0.3
0.3
All humectants 17.5 10
10
All humectants
17.5
6
4
3
2
1
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
None
Total
0
None
Anti-wrinkle rating
0
Ingredient Est. % Benchmark
Rich in Antioxidants
2
1.3
1
All antioxidants 4.3 3 Rich in antioxidants
All antioxidants
4.3
Sodium Hyaluronate
2
Tocopheryl Acetate
1.3
Aloe Barbadensis Leaf Extract
1
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
1
All soothing 1 5 No
All soothing
1
1
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.
Glycerin
Est. %6
Function
Origin
Glycerin

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

Propylene Glycol
Est. %4
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.
Soluble Collagen
Est. %3
Function
Origin
Soluble CollagenA protein obtained from farm or marine animals. Collagen molecules are too big to penetrate the skin so when they are applied via a skincare product they sit on top of the skin and act as humectant moisturizers.
Sodium Hyaluronate
Est. %2
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.

Tremella Fuciformis Polysaccharide
Est. %1.5
Function
Origin
Tremella Fuciformis Polysaccharide
Tocopheryl Acetate
Est. %1.3
Function
Origin
Tocopheryl Acetate

An antioxidant derivative of tocopherol (vitamin E). It helps to protect cells from free radicals and UV damage through the conversion to active vitamin E in the skin. It is more stable than tocopherol.

Aloe Barbadensis Leaf Extract
Est. %1
Function
Origin
Aloe Barbadensis Leaf ExtractDerived from Aloe vera leaves, this moisturizing humectant, soothing, and antioxidant extract is commonly used in products targeting eczema, sunburn, or dermatitis. It soothes the skin and reduces the signs of inflammation and sensitivity.
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.
PPG-10 Methyl Glucose Ether
Est. %0.3
Function
Origin
PPG-10 Methyl Glucose Ether
PEG-180
Est. %0.3
Function
Origin
PEG-180
PEG-32
Est. %0.3
Function
Origin
PEG-32A synthetic water-loving moisturizer that produces water gels.
Xanthan Gum
Est. %0.3
Function
Origin
Xanthan GumA natural multi-functional ingredient that originates from fermented sugars. Xanthan gum acts as a viscosity-building agent to thicken skincare products. It is also an excellent stabilizer and works well to hold other ingredients together.
Carbomer
Est. %0.3
Function
Origin
CarbomerA synthetic ingredient with the ability to gel water. When used in emulsions, such as lotions and creams, carbomer can also act as an emulsion stabilizer.
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.
Tromethamine
Est. %0.3
Function
Origin
TromethamineAn ingredient based on amino acids that is commonly used as a pH adjuster. It has a high pH, which means that it is basic (alkaline), so adding tromethamine to a skincare product will increase its overall pH level.
Caprylyl Glycol
Est. %0.3
Function
Origin
Caprylyl GlycolAn emollient that improves product spreadability and offers a silky feel on the skin. It also acts as a preservative booster that improves the efficacy of other preservatives. According to the manufacturer, it is also a humectant moisturizer.
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.
Coceth-7
Est. %0.3
Function
Origin
Coceth-7
PPG-1-PEG-9 Lauryl Glycol Ether
Est. %0.3
Function
Origin
PPG-1-PEG-9 Lauryl Glycol Ether
PEG-40 Hydrogenated Castor Oil
Est. %0.3
Function
Origin
PEG-40 Hydrogenated Castor OilA castor oil-derived ingredient often used to incorporate small amounts of oil (such as a fragrance) into a water-based product. PEG-4 HCO is a gold-standard solubilizer and can be used in low amounts due to its ability to solubilize things so well.
Butylene Glycol
Est. %0.3
Function
Origin
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.