Hanasui Vitamin C Serum

Hanasui Vitamin C Serum
5.0
/ 10
Moisturizing
10.0 Humectancy icon Humectancy
0.0 Occlusivity icon Occlusivity
3Anti-wrinkle icon/ 10
Anti-wrinkle
Rich
in Antioxidants

Review

Does Hanasui Vitamin C Serum work?

Based on the ingredient list analysis by CreamScan AI, these are the key benefits you can expect from using Hanasui Vitamin C Serum:

  • Strong humectant moisturizing. This lightweight, humectant-rich product, ideal for oily skin, has a moisturizing rating of 5.0 out of 10.
  • Some anti-wrinkle efficacy: Hanasui Vitamin C Serum has an anti-wrinkle rating of 3.0 out of 10 so you may expect some, although limited, effect on wrinkles.
  • Antioxidant protection.

Lightweight moisturizer ideal for oily skin and a humectant boost for any skincare routine

According to CreamScan analysis, Hanasui Vitamin C 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%), Butylene Glycol (est. ≈4.0%) and Niacinamide (est. ≈2.0%).

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.

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.

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.

Some anti-wrinkle efficacy

According to CreamScan analysis, Hanasui Vitamin C Serum has a slight anti-wrinkle rating of 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, Hanasui Vitamin C Serum also contains Sodium Ascorbyl Phosphate, an ingredient often marketed as effective in reducing wrinkles. However, the studies supporting the anti-wrinkle claims of Sodium Ascorbyl Phosphate provide insufficient evidence of its efficacy according to CreamScan Research Evaluation Standards. Therefore, this ingredient does 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.

Rich in skin-protecting antioxidants

We estimate that Hanasui Vitamin C Serum is rich (> 3%) in antioxidants, specifically Sodium Ascorbyl Phosphate (est. ≈2.0%) and Niacinamide (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.

Ingredients

Est. % Ingredient Origin Functions
80
6
4
2
2
1.5
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
Est. %
Water
Function:
Origin:
Glycerin
Function:
Origin:
Butylene Glycol
Function:
Origin:
Sodium Ascorbyl Phosphate
Function:
Origin:
Niacinamide
Function:
Origin:
Urea
Function:
Origin:
Betaine
Function:
Origin:
Biosaccharide Gum-1
Function:
Origin:
Ethoxydiglycol
Function:
Origin:
Phenoxyethanol
Function:
Origin:
Citric Acid
Function:
Origin:
Carbomer
Function:
Origin:
Allantoin
Function:
Origin:
Xanthan Gum
Function:
Origin:
Fragrance
Function:
Origin:
Triethylene Glycol
Function:
Origin:
Aminomethyl Propanol
Function:
Origin:
Disodium EDTA
Function:
Origin:
Sodium Metabisulfite
Function:
Origin:
Hydrogenated Lecithin
Function:
Origin:
Yellow 6 (CI 15985)
Function:
Origin:
Glycine Soja (Soybean) Sterols
Function:
Origin:
Sodium Polygamma-Glutamate
Function:
Origin:
2-Aminobutanol
Function:
Origin:
Chlorphenesin
Function:
Origin:

Ratings

All humectants
15.4
6
4
2
1.5
1
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 15.4 10
10.0
6
4
2
1.5
1
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
2
1.5
1
0.3
0.3
0.3
All humectants 15.4 10
10
All humectants
15.4
6
4
2
1.5
1
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
6 /10 4 2 3
n/a
- 2 -
Total
3
Niacinamide
3
Ingredient anti-wrinkle power
6 /10
when present at, %
4
in this formula, est. %
2
Sodium Ascorbyl Phosphate
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
2
Anti-wrinkle rating
3
Ingredient Est. % Benchmark
Rich in Antioxidants
2
2
0.3
All antioxidants 4.3 3 Rich in antioxidants
All antioxidants
4.3
Niacinamide
2
Sodium Ascorbyl Phosphate
2
Sodium Metabisulfite
0.3
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
2
0.3
0.3
All soothing 2.6 5 No
All soothing
2.6
2
0.3
0.3
Benchmark
5

Ingredients explained

Water
Est. %80
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.

Butylene Glycol
Est. %4
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.

Sodium Ascorbyl Phosphate
Est. %2
Function
Origin
Sodium Ascorbyl PhosphateThe most researched derivative of vitamin C. It boosts collagen synthesis, thereby improving skin structure and elasticity. SAP is effective in the treatment of inflamed acne lesions and has a weak but positive effect on pigmentation issues.
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.

Urea
Est. %1.5
Function
Origin
UreaUrea can be found in urine, skin, and other tissues as a degradation product of proteins. In concentrations below 5%, urea is humectant moisturizing. At concentrations above 10% it is keratolytic, that helps to break away old, flaking, and cracked skin.
Betaine
Est. %1
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.
Biosaccharide Gum-1
Est. %0.3
Function
Origin
Biosaccharide Gum-1A polysaccharide with humectant moisturizing and soothing properties.
Ethoxydiglycol
Est. %0.3
Function
Origin
EthoxydiglycolA type of alcohol with humectant moisturizing properties. It also acts as a solvent, since it mixes well with a variety of other compounds, including water and even some oils.
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.
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.
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.
Allantoin
Est. %0.3
Function
Origin
AllantoinA fluffy, white powder that acts as a humectant due to its water-loving chemistry and as an exfoliant that helps to remove dead skin cells. It has also been shown to be very soothing to irritated and inflamed skin.
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.
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.
Triethylene Glycol
Est. %0.3
Function
Origin
Triethylene Glycol
Aminomethyl Propanol
Est. %0.3
Function
Origin
Aminomethyl PropanolA synthetic ingredient that helps to adjust the pH of a product to make it less acidic.
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.
Sodium Metabisulfite
Est. %0.3
Function
Origin
Sodium MetabisulfiteA preservative that is especially effective at preventing fungus and mold growth. It is normally combined with a strong bactericidal preservative in order to achieve broad-spectrum protection. Sodium metabisulfite is also used as an antioxidant.
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.
Yellow 6 (CI 15985)
Est. %0.3
Function
Origin
Yellow 6 (CI 15985)A petroleum-derived reddish-yellow dye, also known as Sunset Yellow. It is the third most used pigment in food, cosmetics, and drugs.
Glycine Soja (Soybean) Sterols
Est. %0.3
Function
Origin
Glycine Soja (Soybean) SterolsA mixture of phytosterols isolated from soybean oil. Phytosterols, when used in skincare products, have emollient properties and can make the skin feel softer and smoother.
Sodium Polygamma-Glutamate
Est. %0.3
Function
Origin
Sodium Polygamma-Glutamate
2-Aminobutanol
Est. %0.3
Function
Origin
2-Aminobutanol
Chlorphenesin
Est. %0.3
Function
Origin
ChlorphenesinA preservative and broad-spectrum antimicrobial agent that protects products from a wide range of bacteria and fungi.