Hello Sunday The One That's a Serum SPF 45 Hydrating & Brightening Vitamin C Serum

Hello Sunday The One That's a Serum SPF 45 Hydrating & Brightening Vitamin C Serum
1.8
/ 10
Moisturizing
3.3 Humectancy icon Humectancy
0.4 Occlusivity icon Occlusivity
Rich
in Antioxidants
45
SPF icon
SPF

Review

Does Hello Sunday The One That's a Serum SPF 45 Hydrating & Brightening Vitamin C Serum work?

Based on the ingredient list analysis by CreamScan AI, these are the key benefits you can expect from using Hello Sunday The One That's a Serum SPF 45 Hydrating & Brightening Vitamin C Serum:

  • A bit of moisturizing. It has a moisturizing rating of 1.8 out of 10.
  • Antioxidant protection.
  • High sun protection for extended outdoor activities and exposure.

Slight Moisturizing When Used Alone

According to CreamScan analysis, Hello Sunday The One That's a Serum SPF 45 Hydrating & Brightening Vitamin C Serum is slightly moisturizing, with a moisturizing rating of 1.8 out of 10.

Is it more humectant or occlusive? Rather humectant. It has a low occlusivity of 0.4 out of 10 and a moderate humectancy of 3.3 out of 10, primarily due to Glycerin (est. ≈1.5%), Sodium Hyaluronate (est. ≈0.3%) and Pyrus Malus (Apple) Fruit Extract (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.

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

Questionable anti-wrinkle efficacy

According to CreamScan analysis, Hello Sunday The One That's a Serum SPF 45 Hydrating & Brightening Vitamin C Serum has a zero anti-wrinkle rating.

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

Rich in skin-protecting antioxidants

We estimate that Hello Sunday The One That's a Serum SPF 45 Hydrating & Brightening Vitamin C Serum is rich (> 3%) in antioxidants, specifically Sodium Hyaluronate (est. ≈0.3%), Glycine Soja (Soybean) Seed Extract (est. ≈0.3%), Glycine Soja (Soybean) Oil (est. ≈0.3%), and others.

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.

High sun protection for extended outdoor activities and exposure

With an SPF of 45, Hello Sunday The One That's a Serum SPF 45 Hydrating & Brightening Vitamin C Serum provides high sun protection, making it ideal for prolonged outdoor activities such as hiking, gardening, sports, or spending time at the beach.

This level of SPF blocks up to 98% of UVB rays, significantly reducing the risk of sunburn. When formulated as broad-spectrum, it also protects against UVA rays, which penetrate deeper into the skin and contribute to premature aging, hyperpigmentation, and long-term damage.

This level of SPF is recommended for most skin types, including those with moderate sun sensitivity. For individuals with fair or very sensitive skin, or under intense sun exposure, a higher SPF of 50+ is advised.

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.

It's important to apply sunscreen generously and reapply every two hours or after swimming or sweating to maintain effectiveness.

Ingredients

Est. % Ingredient Origin Functions
60
9
7
5
3
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. %
Water
Function:
Origin:
Octocrylene
Function:
Origin:
Homosalate
Function:
Origin:
Octisalate
Function:
Origin:
Avobenzone
Function:
Origin:
Glycerin
Function:
Origin:
Butyloctyl Salicylate
Function:
Origin:
C12-15 Alkyl Benzoate
Function:
Origin:
Silica
Function:
Origin:
Pongamia Glabra Seed Oil
Function:
Origin:
Undecane
Function:
Origin:
Sodium Hyaluronate
Function:
Origin:
Glycine Soja (Soybean) Seed Extract
Function:
Origin:
Glycine Soja (Soybean) Oil
Function:
Origin:
Pyrus Malus (Apple) Fruit Extract
Function:
Origin:
Pongamia Pinnata Seed Extract
Function:
Origin:
Tocopherol
Function:
Origin:
Oryza Sativa (Rice) Germ Extract
Function:
Origin:
Oryza Sativa (Rice) Extract
Function:
Origin:
Tetrahexyldecyl Ascorbate
Function:
Origin:
Dunaliella Salina Extract
Function:
Origin:
Haematococcus Pluvialis Extract
Function:
Origin:
Caesalpinia Spinosa Fruit Pod Extract
Function:
Origin:
Helianthus Annuus (Sunflower) Sprout Extract
Function:
Origin:
Fructose
Function:
Origin:
Glucose
Function:
Origin:
Tridecane
Function:
Origin:
Ethyl Ferulate
Function:
Origin:
Polyglyceryl-4 Laurate
Function:
Origin:
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Function:
Origin:
Hydroxyacetophenone
Function:
Origin:
Polyglyceryl-6 Laurate
Function:
Origin:
Arachidyl Alcohol
Function:
Origin:
Cellulose Gum
Function:
Origin:
Polyglyceryl-3 Diisostearate
Function:
Origin:
Behenyl Alcohol
Function:
Origin:
Sodium Phytate
Function:
Origin:
Arachidyl Glucoside
Function:
Origin:
Maltodextrin
Function:
Origin:
Sodium Dilauramidoglutamide Lysine
Function:
Origin:
Polysorbate 60
Function:
Origin:
Sorbitan Isostearate
Function:
Origin:
Inulin
Function:
Origin:
Xanthan Gum
Function:
Origin:
Cellulose
Function:
Origin:
Phenoxyethanol
Function:
Origin:
Citric Acid
Function:
Origin:

Ratings

All humectants
3.3
1.5
0.3
0.3
0.3
0.3
0.3
0.3
Benchmark
10
All occlusives
0.9
0.3
0.3
0.3
Benchmark
20
Moisturizing rating
1.8
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 3.3 10
3.3
1.5
0.3
0.3
0.3
0.3
0.3
0.3
Occlusivity All occlusives 0.9 20
0.4
0.3
0.3
0.3
Moisturizing rating
1.8
Ingredient Est. % Benchmark Humectancy
1.5
0.3
0.3
0.3
0.3
0.3
0.3
All humectants 3.3 10
3.3
All humectants
3.3
1.5
0.3
0.3
0.3
0.3
0.3
0.3
Benchmark
10
Ingredient Est. % Benchmark Occlusivity
0.3
0.3
0.3
All occlusives 0.9 20
0.4
All occlusives
0.9
0.3
0.3
0.3
Benchmark
20
Ingredient
Ingredient anti-wrinkle power
when present at, %
in this formula est. %
Rating
n/a
- 0.3 -
Total
0
Tetrahexyldecyl Ascorbate
-
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
0.3
0.3
0.3
0.3
0.3
0.3
All antioxidants 3 3 Rich in antioxidants
All antioxidants
3
Sodium Hyaluronate
0.3
Glycine Soja (Soybean) Seed Extract
0.3
Glycine Soja (Soybean) Oil
0.3
Pyrus Malus (Apple) Fruit Extract
0.3
Tocopherol
0.3
Tetrahexyldecyl Ascorbate
0.3
Dunaliella Salina Extract
0.3
Haematococcus Pluvialis Extract
0.3
Ethyl Ferulate
0.3
Hydroxyacetophenone
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. %60
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.
Octocrylene
Est. %9
Function
Origin
OctocryleneA synthetic compound that protects skin against harmful ultraviolet light.
Homosalate
Est. %7
Function
Origin
HomosalateA synthetic chemical UV filter that protects against harmful UVB radiation.
Octisalate
Est. %5
Function
Origin
OctisalateA UVB sunscreen also known as ethylhexyl salicylate. It is normally paired with UVA sunscreens to provide broad-spectrum protection. Octisalate also protects other ingredients, like colorants and antioxidants, from deterioration due to exposure to UV light.
Avobenzone
Est. %3
Function
Origin
AvobenzoneA popular sunscreen that protects against UVA rays, which cause premature aging and skin cancer. Avobenzone degrades after about 30 minutes of sun exposure and becomes ineffective. It is therefore often paired with UV-filter stabilizers such as octocrylene.
Glycerin
Est. %1.5
Function
Origin
Glycerin

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

Butyloctyl Salicylate
Est. %1.3
Function
Origin
Butyloctyl SalicylateA synthetic emollient and solvent. It is primarily used as a carrier oil to disperse minerals in, including pigments and sunscreen minerals. It can also absorb UV light, thus boosting the SPF of sunscreen products.
C12-15 Alkyl Benzoate
Est. %1
Function
Origin
C12-15 Alkyl BenzoateA synthetic emollient ester. It works to improve the appearance of the skin by filling in the microcracks on the surface, thereby making the skin appear softer and smoother. It imparts a lightweight, velvety feel.
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.
Pongamia Glabra Seed Oil
Est. %0.3
Function
Origin
Pongamia Glabra Seed Oil
Undecane
Est. %0.3
Function
Origin
Undecane
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.

Glycine Soja (Soybean) Seed Extract
Est. %0.3
Function
Origin
Glycine Soja (Soybean) Seed ExtractAn antioxidant, soothing, and wound healing extract derived from soybeans. Soybeans are a famous source of phytoestrogens - plant compounds that have a similar effect to steroid hormones.
Glycine Soja (Soybean) Oil
Est. %0.3
Function
Origin
Glycine Soja (Soybean) OilAn occlusive moisturizing oil expressed from soybeans. It does not leave an oily feeling on the skin due to its low content of saturated fatty acids. Glycine soja oil contains emollient fatty acids and a significant amount of antioxidants.
Pyrus Malus (Apple) Fruit Extract
Est. %0.3
Function
Origin
Pyrus Malus (Apple) Fruit ExtractAn extract derived from apple fruit that has humectant moisturizing and antioxidant properties, as well as gentle anti-pigment effects. It contains humectant sugars, anti-pigment organic acids, and flavonoids.
Pongamia Pinnata Seed Extract
Est. %0.3
Function
Origin
Pongamia Pinnata Seed Extract
Tocopherol
Est. %0.3
Function
Origin
Tocopherol

Simply another name for vitamin E. Tocopherol is a fantastic ingredient and especially beneficial for dry and inflamed skin. It has occlusive moisturizing, emollient, antioxidant, and photoprotective properties.

Oryza Sativa (Rice) Germ Extract
Est. %0.3
Function
Origin
Oryza Sativa (Rice) Germ Extract
Oryza Sativa (Rice) Extract
Est. %0.3
Function
Origin
Oryza Sativa (Rice) ExtractAn abrasive rice extract rich in various emollient fatty acids, amino acids, and vitamin E.
Tetrahexyldecyl Ascorbate
Est. %0.3
Function
Origin
Tetrahexyldecyl AscorbateA lipid-soluble form of vitamin C that is more stable and less irritating than ascorbic acid. According to a recent clinical study, THDA has all the capabilities of regular vitamin C, including anti-wrinkle and anti-pigment activity.
Dunaliella Salina Extract
Est. %0.3
Function
Origin
Dunaliella Salina ExtractDerived from a species of bright red algae, this extract contains the potent antioxidant beta-carotene, as well as a humectant moisturizing glycerol.
Haematococcus Pluvialis Extract
Est. %0.3
Function
Origin
Haematococcus Pluvialis Extract
Caesalpinia Spinosa Fruit Pod Extract
Est. %0.3
Function
Origin
Caesalpinia Spinosa Fruit Pod Extract
Helianthus Annuus (Sunflower) Sprout Extract
Est. %0.3
Function
Origin
Helianthus Annuus (Sunflower) Sprout Extract
Fructose
Est. %0.3
Function
Origin
FructoseA natural sugar that moisturizes the skin by drawing water to the surface.
Glucose
Est. %0.3
Function
Origin
GlucoseA simple sugar that is also one of two components of sucrose, or table sugar. It is used as a humectant in skincare products. Glucose is also used to flavor lip care cosmetics because of its mildly sweet taste.
Tridecane
Est. %0.3
Function
Origin
Tridecane
Ethyl Ferulate
Est. %0.3
Function
Origin
Ethyl Ferulate
Polyglyceryl-4 Laurate
Est. %0.3
Function
Origin
Polyglyceryl-4 Laurate
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Est. %0.3
Function
Origin
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate CopolymerAn emulsion stabilizer and thickener that helps to create a pleasant, satiny, and light formula texture. It works by forming a gel-like network within water or oil, which both stabilizes other ingredients and produces a thickening effect.
Hydroxyacetophenone
Est. %0.3
Function
Origin
HydroxyacetophenoneAn antioxidant compound that can be found in many plants, although it is manufactured synthetically for skincare purposes. It can boost the preservative action of other conservants.
Polyglyceryl-6 Laurate
Est. %0.3
Function
Origin
Polyglyceryl-6 Laurate
Arachidyl Alcohol
Est. %0.3
Function
Origin
Arachidyl AlcoholA non-drying fatty alcohol that functions as an emollient, emulsion stabilizer, and viscosity controlling agent. It also produces a mattifying effect when applied in a skincare product onto the skin.
Cellulose Gum
Est. %0.3
Function
Origin
Cellulose GumA polymer that is derived from its namesake, cellulose, which is plant-based. It has many formula-helper benefits, including thickening and product stabilization.
Polyglyceryl-3 Diisostearate
Est. %0.3
Function
Origin
Polyglyceryl-3 DiisostearateA vegetable-based ingredient that stabilizes mixtures of oil and water.
Behenyl Alcohol
Est. %0.3
Function
Origin
Behenyl AlcoholA fatty alcohol with emollient properties. It is used as a co-emulsifier and thickener and tends to result in a product with a smooth and creamy application texture.
Sodium Phytate
Est. %0.3
Function
Origin
Sodium PhytateSodium phytate is a chelating agent that serves to remove heavy metal ions from water. Removing metal ions helps other ingredients, such as antioxidants and preservatives, to perform better and keep products from separating.
Arachidyl Glucoside
Est. %0.3
Function
Origin
Arachidyl GlucosideA mild cleanser and emulsifier that helps oil and water to mix and form emulsions.
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.
Sodium Dilauramidoglutamide Lysine
Est. %0.3
Function
Origin
Sodium Dilauramidoglutamide Lysine
Polysorbate 60
Est. %0.3
Function
Origin
Polysorbate 60An ester based on sorbitan. It is good for emulsifying water and oils together – specifically making oil-in-water emulsions. Polysorbate 60 is also said to give a product a notable fragrance.
Sorbitan Isostearate
Est. %0.3
Function
Origin
Sorbitan IsostearateA mild yet powerful emulsifier primarily utilized to produce water-in-oil emulsions. It helps to create a particularly rich and substantial emulsion.
Inulin
Est. %0.3
Function
Origin
InulinA naturally occurring polysaccharide that works as a humectant moisturizing ingredient.
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.
Cellulose
Est. %0.3
Function
Origin
CelluloseA natural ingredient that can create water-based gels, absorb oils, and exfoliate the skin. One of the main functions of cellulose is as a bulking and viscosity controlling agent. Cellulose can also modify the slip aesthetics and act as an opacifying 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.
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.