MizuMi UV Water Serum SPF50+ PA++++ Review

MizuMi UV Water Serum SPF50+ PA++++
1.8
/ 10
Moisturizing
3.7 Humectancy icon Humectancy
0.0 Occlusivity icon Occlusivity
50
SPF icon
SPF
Ingredients

MizuMi UV Water Serum SPF50+ PA++++ Ingredients

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Full Ingredient List (INCI):

Water, Zinc Oxide, Titanium Dioxide (CI 77891), Isododecane, Neopentyl Glycol Diheptanoate, Butylene Glycol, Propanediol, Dioctyldodeceth-5 Lauroyl Glutamate, Alumina, Ammonium Acryloyldimethyltaurate/VP Copolymer, Caprylhydroxamic Acid, Glyceryl Stearate, Steareth-21, Steareth-2, PEG-100 Stearate, Phenoxyethanol, Methylpropanediol, Simethicone, Methyl Gluceth-20, Triethanolamine, Carbomer, Ascorbyl Tetraisopalmitate, Tocopheryl Acetate, Xanthan Gum, Sodium Hyaluronate, Saxifraga Sarmentosa Extract
Review

Does MizuMi UV Water Serum SPF50+ PA++++ Work?

 
According to CreamScan's analysis of the ingredient list, here’s what MizuMi UV Water Serum SPF50+ PA++++ has to offer:
 
✅ A bit of moisturizing. It has a moisturizing rating of 1.8 out of 10.
✅ Very high sun protection for prolonged sun exposure, such as spending the day at the beach, hiking, or outdoor sports.

  

Key Benefits of MizuMi UV Water Serum SPF50+ PA++++

 
These are the key benefits you can expect from using MizuMi UV Water Serum SPF50+ PA++++:
 

🔵 Slight Moisturizing When Used Alone

According to CreamScan analysis, MizuMi UV Water Serum SPF50+ PA++++ is slightly moisturizing, with a moisturizing rating of 1.8 out of 10.

Is it more humectant or occlusive? Purely humectant. It has zero occlusivity (we didn't find any occlusive ingredients on the ingredient list) and a moderate humectancy of 3.7 out of 10, primarily due to Butylene Glycol (est. ≈1.5%), Propanediol (est. ≈1.3%) and Methylpropanediol (est. ≈0.3%).

This type of product provides relatively light moisturizing on its own but can contribute to overall moisturizing efficacy when used as part of a skincare routine, alongside another moisturizer.

📌 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.

Please refer to the Ratings section below for details of the moisturizing rating calculation.

☀️☀️☀️ Very High Sun Protection for Prolonged Sun Exposure, All Skin Types, and High-risk Conditions

With an SPF of 50, MizuMi UV Water Serum SPF50+ PA++++ provides very high sun protection, suitable for intense sun exposure in tropical climates, beach vacations, or high-altitude environments.

This level of SPF blocks 98% or more of UVB rays, offering the highest level of defense against sunburn. Broad-spectrum formulations also provide strong protection against UVA rays, which are responsible for skin aging, pigmentation, and DNA damage.

📌 For optimal protection, choose products labeled broad-spectrum to ensure defense against both UVA rays, which contribute to skin aging and pigmentation, and UVB rays that cause sunburn.

This level of SPF is ideal for all skin types, particularly fair, sensitive, or post-treatment skin (e.g., after laser or chemical procedures). It is also highly recommended for individuals at greater risk of skin cancer.

For extended outdoor activities or water exposure, choose a water-resistant formula and reapply every two hours for maximum effectiveness.

📌 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: MizuMi UV Water Serum SPF50+ PA++++

 
CreamScan identified a few things to consider before adding MizuMi UV Water Serum SPF50+ PA++++ to your skincare routine:
 

⚠️ Questionable anti-wrinkle efficacy

If one of your main reasons for choosing MizuMi UV Water Serum SPF50+ PA++++ is its potential anti-aging effects, please note that, according to CreamScan analysis, it currently has a zero anti-wrinkle rating.

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

While this does not categorically rule out the possibility that Ascorbyl Tetraisopalmitate 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 MizuMi UV Water Serum SPF50+ PA++++

 
Here’s an overview of the pros and cons of MizuMi UV Water Serum SPF50+ PA++++ to help you decide if it’s the right choice for your skincare routine:
 

🟩 Pros:

Provides relatively light moisturizing on its own but can contribute to the moisturizing efficacy of any skincare routine
✅ Provides very high sun protection, ideal for intense sun exposure in tropical climates, high-altitude environments, and beach vacations, suitable for all skin types
 

⭕ Cons: 

⚠️ Questionable anti-wrinkle efficacy
   

Summary: MizuMi UV Water Serum SPF50+ PA++++

 
Based on the ingredient list analysis, CreamScan AI suggests that MizuMi UV Water Serum SPF50+ PA++++
, as a moisturizer, provides relatively light hydration on its own but can enhance the moisturizing efficacy of any skincare routine.
 
With an SPF of 50, MizuMi UV Water Serum SPF50+ PA++++ delivers very high sun protection, perfect for intense sun exposure in tropical climates, high-altitude settings, and beach vacations, and suitable for all skin types.
 
That said, there are some things about MizuMi UV Water Serum SPF50+ PA++++ worth noting.
 
If one of your main reasons for considering MizuMi UV Water Serum SPF50+ PA++++ 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
Est. %
Water
Function:
Origin:
Zinc Oxide
Function:
Origin:
Titanium Dioxide (CI 77891)
Function:
Origin:
Isododecane
Function:
Origin:
Neopentyl Glycol Diheptanoate
Function:
Origin:
Butylene Glycol
Function:
Origin:
Propanediol
Function:
Origin:
Dioctyldodeceth-5 Lauroyl Glutamate
Function:
Origin:
Alumina
Function:
Origin:
Ammonium Acryloyldimethyltaurate/VP Copolymer
Function:
Origin:
Caprylhydroxamic Acid
Function:
Origin:
Glyceryl Stearate
Function:
Origin:
Steareth-21
Function:
Origin:
Steareth-2
Function:
Origin:
PEG-100 Stearate
Function:
Origin:
Phenoxyethanol
Function:
Origin:
Methylpropanediol
Function:
Origin:
Simethicone
Function:
Origin:
Methyl Gluceth-20
Function:
Origin:
Triethanolamine
Function:
Origin:
Carbomer
Function:
Origin:
Ascorbyl Tetraisopalmitate
Function:
Origin:
Tocopheryl Acetate
Function:
Origin:
Xanthan Gum
Function:
Origin:
Sodium Hyaluronate
Function:
Origin:
Saxifraga Sarmentosa Extract
Function:
Origin:

Ratings

All humectants
3.7
1.5
1.3
0.3
0.3
0.3
Benchmark
10
All occlusives
0.0
None
Benchmark
20
Moisturizing rating
1.8
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 3.7 10
3.7
1.5
1.3
0.3
0.3
0.3
Occlusivity All occlusives 0.0 20
0.0
None
Moisturizing rating
1.8
Ingredient Est. % Benchmark Humectancy
1.5
1.3
0.3
0.3
0.3
All humectants 3.7 10
3.7
All humectants
3.7
1.5
1.3
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
Ascorbyl Tetraisopalmitate
-
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
0.3
0.3
0.3
All antioxidants 1.2 3 No
All antioxidants
1.2
Ascorbyl Tetraisopalmitate
0.3
Tocopheryl Acetate
0.3
Sodium Hyaluronate
0.3
Saxifraga Sarmentosa Extract
0.3
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
0.3
All soothing 0.3 5 No
All soothing
0.3
0.3
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.
Zinc Oxide
Est. %6
Function
Origin
Zinc OxideA white mineral powder mainly used in skincare as a physical sunscreen. It protects against UVA light that leads to visible signs of aging, including wrinkles and fine lines. Zinc oxide can also be used as a colorant to enhance the whiteness of a product.
Titanium Dioxide (CI 77891)
Est. %4
Function
Origin
Titanium Dioxide (CI 77891)One of two the most commonly used mineral sunscreens. It can absorb UV light, including UVB – which causes burning, tanning, and even skin cancer. Also used as a colorant, titanium dioxide gives a product a bright white color.
Isododecane
Est. %3
Function
Origin
IsododecaneAn emollient derived from petroleum with high spreadability. It is often used as a replacement for oils and silicones because it leaves no residue behind on the skin. When a product is labeled as “oil-free” it may contain isododecane instead of heavier oils.
Neopentyl Glycol Diheptanoate
Est. %2
Function
Origin
Neopentyl Glycol DiheptanoateAn emollient ester with an exceptionally lightweight feel. It absorbs quickly and produces a silky feel with excellent spreadability. It also serves as an excellent solvent and is commonly used to suspend sunscreen actives.
Butylene Glycol
Est. %1.5
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.

Propanediol
Est. %1.3
Function
Origin
PropanediolAn excellent solvent capable of mixing water with normally water-insoluble ingredients. It also functions as a humectant due to its water-loving alcohol groups. Propanediol can control the viscosity of a product by reducing its thickness.
Dioctyldodeceth-5 Lauroyl Glutamate
Est. %1
Function
Origin
Dioctyldodeceth-5 Lauroyl Glutamate
Alumina
Est. %0.3
Function
Origin
AluminaA mineral derived from the metal ore known as aluminum. It is commonly used as an abrasive and also acts as a thickening viscosity controlling agent (and thus as a bulking agent). Alumina is also a great opacifier.
Ammonium Acryloyldimethyltaurate/VP Copolymer
Est. %0.3
Function
Origin
Ammonium Acryloyldimethyltaurate/VP CopolymerA polymeric ingredient that creates lightweight and refreshing gel textures. It also works as a viscosity controlling agent.
Caprylhydroxamic Acid
Est. %0.3
Function
Origin
Caprylhydroxamic AcidA chelating agent used alongside preservatives in order to boost their antimicrobial activity.
Glyceryl Stearate
Est. %0.3
Function
Origin
Glyceryl StearateAn emollient and emulsifier typically derived from vegetable sources through a chemical reaction with glycerin. It provides stability, texture, and consistency to formulations. Its main function is to allow oil and water to mix.
Steareth-21
Est. %0.3
Function
Origin
Steareth-21One of several emulsifiers in the 'steareth' group that helps oils and water mix, especially in highly acidic emulsions. It also offers a cleansing effect to the skin.
Steareth-2
Est. %0.3
Function
Origin
Steareth-2A waxy, naturally derived or synthetic emulsifier that can handle extreme formula conditions such as a low pH. It offers emulsifying properties to a formula by helping oils and water to mix.
PEG-100 Stearate
Est. %0.3
Function
Origin
PEG-100 StearateThis surfactant is more specifically classified as an emulsifier that produces oil-in-water emulsions. PEG-100 stearate can also be used as a cleansing agent.
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.
Methylpropanediol
Est. %0.3
Function
Origin
MethylpropanediolMethylpropanediol is a unique glycol that contains two primary hydroxyl groups. That makes methylpropanediol a powerful humectant and an excellent solvent.
Simethicone
Est. %0.3
Function
Origin
SimethiconeA synthetic foam reducing agent that imparts a dry, cushiony aesthetic.
Methyl Gluceth-20
Est. %0.3
Function
Origin
Methyl Gluceth-20A humectant synthetically derived from glucose. It takes on the form of a clear, syrupy liquid.
Triethanolamine
Est. %0.3
Function
Origin
TriethanolamineA clear, colorless, and highly viscous liquid, this ingredient is an excellent pH adjuster. When it is necessary to neutralize an acidic solution or to generally increase the pH of a product, triethanolamine is a common choice.
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.
Ascorbyl Tetraisopalmitate
Est. %0.3
Function
Origin
Ascorbyl Tetraisopalmitate

Ascorbyl Tetraisopalmitate (ATIP) is an oil-soluble derivative of ascorbic acid, or vitamin C. It is more stable than ascorbic acid.

Tocopheryl Acetate
Est. %0.3
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.

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.
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.

Saxifraga Sarmentosa Extract
Est. %0.3
Function
Origin
Saxifraga Sarmentosa ExtractA soothing extract obtained from the strawberry saxifrage plant. It contains antioxidant flavonoids.