OSKIA Isotonic Hydra-Serum Review

OSKIA Isotonic Hydra-Serum
5.1
/ 10
Moisturizing
10.0 Humectancy icon Humectancy
0.2 Occlusivity icon Occlusivity
3Anti-wrinkle icon/ 10
Anti-wrinkle
Review

Does OSKIA Isotonic Hydra-Serum Work?

 
According to CreamScan AI's analysis of the ingredient list, here’s what OSKIA Isotonic Hydra-Serum has to offer:
 
  • Strong humectant moisturizing. This lightweight, humectant-rich product, ideal for oily skin, has a moisturizing rating of 5.1 out of 10.
  • Modest anti-wrinkle efficacy: OSKIA Isotonic Hydra-Serum has an anti-wrinkle rating of 3.0 out of 10 so you may expect some, although limited, effect on wrinkles.

Key Benefits of OSKIA Isotonic Hydra-Serum

 
These are the key benefits you can expect from using OSKIA Isotonic Hydra-Serum:
 

Lightweight Humectant Moisturizer Ideal for Oily Skin

According to CreamScan analysis, OSKIA Isotonic Hydra-Serum is quite moisturizing, with a moisturizing rating of 5.1 out of 10.

Is it more humectant or occlusive? Significantly more humectant. It has a low occlusivity of 0.2 out of 10 and a maximum humectancy of 10 out of 10, primarily due to the high content of Glycerin (est. ≈4.0%) and Niacinamide (est. ≈2.0%).

This humectant-rich product, when used alone as a moisturizer, is ideal for oily skin, offering significant hydration in a lightweight, fast-absorbing formula with a minimal amount of occlusive ingredients.

It’s also a great choice for people with normal skin who prefer lightweight moisturizers.

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.

Modest Anti-Wrinkle Efficacy

According to CreamScan analysis, OSKIA Isotonic Hydra-Serum has a modest level of anti-wrinkle efficacy, rated 3.0 out of 10.

It contains one ingredient with proven anti-wrinkle efficacy: Niacinamide (est. ≈2.0%), 
 one of the most effective and well-researched anti-wrinkle ingredients. A clinical study involving 30 participants (Kawada et al.) confirmed that a cream with 4% niacinamide reduced the average depth of wrinkles around the eyes by 9% after 8 weeks of use, compared to a vehicle (the same formulation without niacinamide).
 
Among others, OSKIA Isotonic Hydra-Serum also contains contains Acetyl Glucosamine and Gluconolactone, two ingredients often marketed as effective in reducing wrinkles. However, the studies supporting the anti-wrinkle claims of these ingredients provide insufficient evidence of efficacy according to CreamScan Research Evaluation Standards. Therefore, these ingredients do not contribute to 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.

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.

Pros & Cons of OSKIA Isotonic Hydra-Serum

 
Here’s an overview of the pros and cons of OSKIA Isotonic Hydra-Serum 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
  • Offers modest anti-wrinkle efficacy

Cons: 

Ingredients

Est. % Ingredient Origin Functions
70
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
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. %
Lavandula Angustifolia (Lavender) Flower Water
Function:
Origin:
Water
Function:
Origin:
Glycerin
Function:
Origin:
Dimethyl Sulfone
Function:
Origin:
Niacinamide
Function:
Origin:
Panthenol
Function:
Origin:
Acetyl Glucosamine
Function:
Origin:
Leuconostoc/Radish Root Ferment Filtrate
Function:
Origin:
Gluconolactone
Function:
Origin:
Sodium Hyaluronate
Function:
Origin:
Avena Sativa (Oat) Kernel Extract
Function:
Origin:
Calcium Ketogluconate
Function:
Origin:
Betaine
Function:
Origin:
Sodium Gluconate
Function:
Origin:
Sodium Chloride
Function:
Origin:
Sodium PCA
Function:
Origin:
Bisabolol
Function:
Origin:
Aesculus Hippocastanum (Horse Chestnut) Seed Extract
Function:
Origin:
Butyrospermum Parkii (Shea) Butter
Function:
Origin:
Potassium Chloride
Function:
Origin:
Pentapeptide-59
Function:
Origin:
Polyglutamic Acid
Function:
Origin:
PCA
Function:
Origin:
Sodium Lactate
Function:
Origin:
Serine
Function:
Origin:
Alanine
Function:
Origin:
Glycine
Function:
Origin:
Glutamic Acid
Function:
Origin:
Lysine HCl
Function:
Origin:
Threonine
Function:
Origin:
Arginine
Function:
Origin:
Proline
Function:
Origin:
Inulin Lauryl Carbamate
Function:
Origin:
Sclerotium Gum
Function:
Origin:
Hydrogenated Lecithin
Function:
Origin:
Pullulan
Function:
Origin:
Silica
Function:
Origin:
Maltodextrin
Function:
Origin:
Citric Acid
Function:
Origin:
Sodium Benzoate
Function:
Origin:
Xanthan Gum
Function:
Origin:
Lecithin
Function:
Origin:
Sodium Hydroxide
Function:
Origin:
Ethylhexylglycerin
Function:
Origin:
Potassium Sorbate
Function:
Origin:
Alcohol
Function:
Origin:
Phenethyl Alcohol
Function:
Origin:

Ratings

All humectants
12.3
4
2
1.5
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
Benchmark
10
All occlusives
0.3
0.3
Benchmark
20
Moisturizing rating
5.1
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 12.3 10
10.0
4
2
1.5
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
Occlusivity All occlusives 0.3 20
0.2
0.3
Moisturizing rating
5.1
Ingredient Est. % Benchmark Humectancy
4
2
1.5
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
All humectants 12.3 10
10
All humectants
12.3
4
2
1.5
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
Benchmark
10
Ingredient Est. % Benchmark Occlusivity
0.3
All occlusives 0.3 20
0.2
All occlusives
0.3
0.3
Benchmark
20
Ingredient
Ingredient anti-wrinkle power
when present at, %
in this formula est. %
Rating
6 /10 4 2 3
n/a
- 1.3 -
n/a
- 0.3 -
Total
3
Niacinamide
3
Ingredient anti-wrinkle power
6 /10
when present at, %
4
in this formula, est. %
2
Acetyl Glucosamine
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
1.3
Gluconolactone
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
0.3
Anti-wrinkle rating
3
Ingredient Est. % Benchmark
Rich in Antioxidants
2
0.3
0.3
0.3
All antioxidants 2.9 3 No
All antioxidants
2.9
Niacinamide
2
Sodium Hyaluronate
0.3
Avena Sativa (Oat) Kernel Extract
0.3
Aesculus Hippocastanum (Horse Chestnut) Seed Extract
0.3
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
2
1.5
0.3
0.3
0.3
All soothing 4.4 5 No
All soothing
4.4
2
1.5
0.3
0.3
0.3
Benchmark
5

Ingredients explained

Lavandula Angustifolia (Lavender) Flower Water
Est. %70
Function
Origin
Lavandula Angustifolia (Lavender) Flower WaterA fragrant water infused with lavender essential oil. It has astringent and wound healing properties, as well as anti-inflammatory, antioxidant, and antibacterial effects.
Water
Est. %6
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. %4
Function
Origin
Glycerin

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

Dimethyl Sulfone
Est. %3
Function
Origin
Dimethyl Sulfone
Niacinamide
Est. %2
Function
Origin
Niacinamide

Also known as vitamin B3, this ingredient is a true superstar with confirmed moisturizing, anti-acne, hyperpigmentation, and antioxidant benefits. Two studies confirm its significant anti-wrinkle efficacy.

Panthenol
Est. %1.5
Function
Origin
PanthenolA popular soothing and moisturizing derivative of vitamin B5. Panthenol is particularly beneficial for dry, flaking, burned, or damaged skin. It is used to alleviate the symptoms of a rash, dermatitis, eczema, chapped lips, and sunburn.
Acetyl Glucosamine
Est. %1.3
Function
Origin
Acetyl GlucosamineA body-natural amino-saccharide used in skincare as an anti-pigment ingredient. Some other benefits of acetyl glucosamine include decreased skin flakiness, improved wound healing, and even a slight reduction in facial wrinkles.
Leuconostoc/Radish Root Ferment Filtrate
Est. %1
Function
Origin
Leuconostoc/Radish Root Ferment FiltrateA biotechnological fermentation ingredient that is created by feeding radish root to Leuconostoc kimchii. It allegedly contains organic acids and a mixture of peptides known as bacteriocins – which have antimicrobial activity.
Gluconolactone
Est. %0.3
Function
Origin
GluconolactoneA PHA derived from glucose. It has exfoliating and humectant properties and acts as a penetration enhancer for other ingredients. It has also been shown to assist in the treatment of acne and the prevention of photoaging.
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.

Avena Sativa (Oat) Kernel Extract
Est. %0.3
Function
Origin
Avena Sativa (Oat) Kernel ExtractA beneficial extract obtained from Oat groats popular in products aimed at eczema-prone skin. It contains skin healing beta-glucan, anti-inflammatory phenolic compounds, antioxidant flavonoids, various lipids, proteins, and moisturizing amino acids.
Calcium Ketogluconate
Est. %0.3
Function
Origin
Calcium Ketogluconate
Betaine
Est. %0.3
Function
Origin
BetaineAn ingredient derived from the sucrose in sugar beets. It has a negative chemical charge and a positive chemical charge on the same molecule. This allows betaine to be hygroscopic or humectant and thus provide moisturization by drawing water to the skin.
Sodium Gluconate
Est. %0.3
Function
Origin
Sodium GluconateA chelating ingredient that ensures that the harmful metal ions in a formula are unreactive. It also protects other ingredients from degrading.
Sodium Chloride
Est. %0.3
Function
Origin
Sodium Chloride

You’re definitely familiar with sodium chloride, even if you don’t think you are. It’s table salt! Salt works well with some cleansing ingredients (surfactants) to thicken them into gels. It also acts as a stabilizer for water-in-oil emulsions.

Sodium PCA
Est. %0.3
Function
Origin
Sodium PCAOne of the most important parts of the skin's Natural Moisturizing Factor, a mixture of various compounds that keeps the skin’s surface well hydrated. Sodium PCA is used in skincare for its fantastic humectant properties.
Bisabolol
Est. %0.3
Function
Origin
Bisabolol

An anti-inflammatory compound found naturally in German chamomile essential oil. It has a pleasant, sweet, and floral scent. Bisabolol also has soothing and anti-inflammatory properties but can cause an allergic reaction in more sensitive individuals.

Aesculus Hippocastanum (Horse Chestnut) Seed Extract
Est. %0.3
Function
Origin
Aesculus Hippocastanum (Horse Chestnut) Seed ExtractDerived from horse chestnut seeds, this soothing extract contains an anti-inflammatory mixture called Aescin. It is suitable for inflamed and irritated skin.
Butyrospermum Parkii (Shea) Butter
Est. %0.3
Function
Origin
Butyrospermum Parkii (Shea) ButterA semi-solid, buttery fat extracted from the seeds of the Shea tree that is a wonderful occlusive and emollient ingredient mainly comprised of fatty acids. Shea butter contains a large amount of anti-inflammatory and antioxidant compounds.
Potassium Chloride
Est. %0.3
Function
Origin
Potassium ChlorideA salt of hydrochloric acid that stabilizes emulsions through thickening.
Pentapeptide-59
Est. %0.3
Function
Origin
Pentapeptide-59
Polyglutamic Acid
Est. %0.3
Function
Origin
Polyglutamic AcidA natural polymer with incredible water-binding properties that is prepared from glutamic acid through fermentation.
PCA
Est. %0.3
Function
Origin
PCAAlso known as pyrrolidone carboxylic acid, this ingredient is one of the main components of the skin's Natural Moisturizing Factor (which prevents the skin’s surface from drying out).
Sodium Lactate
Est. %0.3
Function
Origin
Sodium LactateA sodium salt of lactic acid. Its main function is as a humectant but it can also serve as a pH adjuster. Additionally, sodium lactate can also be used as a chemical exfoliant due to its close chemical relation to lactic acid.
Serine
Est. %0.3
Function
Origin
SerineA non-essential amino acid, meaning that our body can produce it. It is the largest constituent of the skin's Natural Moisturizing Factor and is used in skincare as a humectant moisturizing ingredient.
Alanine
Est. %0.3
Function
Origin
AlanineA simple amino acid used in skincare as a humectant moisturizing ingredient. It is a part of the so-called Natural Moisturizing Factor, a complex mixture of free amino acids and other water-soluble compounds found in skin cells.
Glycine
Est. %0.3
Function
Origin
GlycineA humectant moisturizing amino acid that is a part of skin's Natural Moisturizing Factor. Some recent studies suggest that it may have barrier repair properties.
Glutamic Acid
Est. %0.3
Function
Origin
Glutamic AcidA non-essential amino acid that serves as a building block for all proteins in the body. It is a moisturizing humectant and a part of the skin's Natural Moisturizing Factor, a mixture of amino acids in skin cells that keeps them hydrated.
Lysine HCl
Est. %0.3
Function
Origin
Lysine HClLysine HCl is a chloride salt of lysine, an essential, slightly alkaline amino acid. It has the same function as the non-salt version - it is a humectant moisturizing and emollient ingredient that, due to its sometimes undesirable aroma, is not often used.
Threonine
Est. %0.3
Function
Origin
ThreonineAn essential amino acid that may play a role in collagen production. However, more research is needed in order to confirm or deny these claims.
Arginine
Est. %0.3
Function
Origin
ArginineA humectant amino acid used to attract water to the skin’s surface. It is a part of the skin's Natural Moisturizing Factor, a mixture of various compounds that keeps the skin’s surface well hydrated. Arginine can also be used as a pH adjuster.
Proline
Est. %0.3
Function
Origin
ProlineThe best humectant moisturizer of all the amino acids. It is a part of the skin's Natural Moisturizing Factor and increases hydration in the top layers of the skin. It also has antioxidant activity and helps to heal damaged skin.
Inulin Lauryl Carbamate
Est. %0.3
Function
Origin
Inulin Lauryl Carbamate
Sclerotium Gum
Est. %0.3
Function
Origin
Sclerotium GumA thickener with a silky, velvety feel that many manufacturers use as an alternative to silicones.
Hydrogenated Lecithin
Est. %0.3
Function
Origin
Hydrogenated LecithinA version of plain lecithin that has been saturated with hydrogen atoms. This ingredient can be derived from plants, like soy or sunflower, from egg yolks, or made synthetically. Its major function is to emulsify water and oils.
Pullulan
Est. %0.3
Function
Origin
Pullulan
Silica
Est. %0.3
Function
Origin
SilicaA widely used cosmetic ingredient with the same chemical composition as the sand found on beaches. A common function of silica is its ability to control viscosity. In certain chemical forms, it can effectively thicken cream-style products.
Maltodextrin
Est. %0.3
Function
Origin
MaltodextrinA formula helper manufactured from starch. It has a sweet flavor and is often used in rinse-off products to support their foaming structure. Maltodextrin is also used to stabilize emulsions and to absorb and bind other ingredients in the formula.
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.
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.
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.
Lecithin
Est. %0.3
Function
Origin
LecithinA humectant, emollient, and emulsifier best suited for water-in-oil emulsions. Lecithin can come from sunflowers, soy, and eggs. The downside to lecithin is that it causes an extra burden on the formula’s preservative because it is nutritious.
Sodium Hydroxide
Est. %0.3
Function
Origin
Sodium Hydroxide

An ingredient that is able to bring the pH of a product up, thereby making it less harsh on the skin.

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.
Potassium Sorbate
Est. %0.3
Function
Origin
Potassium SorbateA preservative widely used in food and personal care products, available from natural sources or synthetically produced. Potassium sorbate works by inhibiting the growth of yeasts, molds, and some bacteria.
Alcohol
Est. %0.3
Function
Origin
AlcoholAn effective antimicrobial ingredient that kills bacteria, fungi, and even some viruses. It is also an excellent solvent and astringent. Alcohol helps to create lighter and less viscous products. It can, however, be dehydrating and skin-sensitizing.
Phenethyl Alcohol
Est. %0.3
Function
Origin
Phenethyl AlcoholA multifunctional ingredient that primarily serves as a preservative. Derived from the Chinese cinnamon tree, it provides broad-spectrum protection for skincare products through its antimicrobial efficacy.