OSEA Sea Vitamin Boost Review

OSEA Sea Vitamin Boost
4.0
/ 10
Moisturizing
8.1 Humectancy icon Humectancy
0.0 Occlusivity icon Occlusivity
Rich
in Antioxidants
Review

Does OSEA Sea Vitamin Boost Work?

 
According to CreamScan AI's analysis of the ingredient list, here’s what OSEA Sea Vitamin Boost has to offer:
 
  • Moderate moisturizing. It has a moisturizing rating of 4.0 out of 10.
  • Antioxidant protection.

Key Benefits of OSEA Sea Vitamin Boost

 
These are the key benefits you can expect from using OSEA Sea Vitamin Boost:
 

Lightweight Purely Humectant Moisturizing, Ideal for Oily Skin

According to CreamScan analysis, OSEA Sea Vitamin Boost is quite moisturizing, with a moisturizing rating of 4.0 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 very high humectancy of 8.1 out of 10, primarily due to the high content of Kappaphycus Alvarezii Extract (est. ≈6.0%).

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.

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 OSEA Sea Vitamin Boost is rich (> 3%) in antioxidants, specifically Kappaphycus Alvarezii Extract (est. ≈6.0%), Corallina Officinalis Extract (est. ≈3.0%) and Punica Granatum Fruit Extract (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: OSEA Sea Vitamin Boost

 
CreamScan AI identified a few things to consider before adding OSEA Sea Vitamin Boost 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 OSEA Sea Vitamin Boost 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.

Questionable anti-wrinkle efficacy

If one of your main reasons for choosing OSEA Sea Vitamin Boost is its potential anti-aging effects, please note that, according to CreamScan analysis, it currently has a zero anti-wrinkle rating.

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

While this does not categorically exclude the possibility that Magnesium Ascorbyl Phosphate may reduce wrinkles, its efficacy is not supported by convincing, vehicle-controlled, double-blind clinical studies - at least none that were accessible 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 OSEA Sea Vitamin Boost

 
Here’s an overview of the pros and cons of OSEA Sea Vitamin Boost 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
  • Rich in antioxidants that combat oxidative stress associated with accelerated skin aging and defend against environmental damage such as UV radiation and pollution

Cons: 

  • Needs occlusives to seal in humectants if used as a standalone moisturizer
  • Questionable anti-wrinkle efficacy

Ingredients

Est. % Ingredient Origin Functions
80
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
Est. %
Water
Function:
Origin:
Kappaphycus Alvarezii Extract
Function:
Origin:
Gigartina Stellata Extract
Function:
Origin:
Corallina Officinalis Extract
Function:
Origin:
Punica Granatum Fruit Extract
Function:
Origin:
Sea Water
Function:
Origin:
Hydrolyzed Gardenia Florida Extract
Function:
Origin:
Magnesium Ascorbyl Phosphate
Function:
Origin:
Allantoin
Function:
Origin:
Glycerin
Function:
Origin:
Citric Acid
Function:
Origin:
Potassium Sorbate
Function:
Origin:
Sodium Benzoate
Function:
Origin:
Maltodextrin
Function:
Origin:
Lonicera Caprifolium (Honeysuckle) Flower Extract
Function:
Origin:
Lonicera Japonica (Honeysuckle) Flower Extract
Function:
Origin:

Ratings

All humectants
8.1
6
1.5
0.3
0.3
Benchmark
10
All occlusives
0.0
None
Benchmark
20
Moisturizing rating
4.0
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 8.1 10
8.1
6
1.5
0.3
0.3
Occlusivity All occlusives 0.0 20
0.0
None
Moisturizing rating
4.0
Ingredient Est. % Benchmark Humectancy
6
1.5
0.3
0.3
All humectants 8.1 10
8.1
All humectants
8.1
6
1.5
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
- 1 -
Total
0
Magnesium Ascorbyl Phosphate
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
1
Anti-wrinkle rating
0
Ingredient Est. % Benchmark
Rich in Antioxidants
6
3
2
1.3
1
0.3
All antioxidants 13.6 3 Rich in antioxidants
All antioxidants
13.6
Kappaphycus Alvarezii Extract
6
Corallina Officinalis Extract
3
Punica Granatum Fruit Extract
2
Hydrolyzed Gardenia Florida Extract
1.3
Magnesium Ascorbyl Phosphate
1
Lonicera Japonica (Honeysuckle) Flower Extract
0.3
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
0.3
0.3
All soothing 0.6 5 No
All soothing
0.6
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.
Kappaphycus Alvarezii Extract
Est. %6
Function
Origin
Kappaphycus Alvarezii ExtractAn emollient extract obtained from the red marine algae called elkhorn sea moss. It is a good source of moisturizing and antioxidant carrageenan, a seaweed polysaccharide.
Gigartina Stellata Extract
Est. %4
Function
Origin
Gigartina Stellata Extract
Corallina Officinalis Extract
Est. %3
Function
Origin
Corallina Officinalis ExtractAn extract from red marine alga, Corallina officinalis is used in skincare for its antioxidant properties. It also contains an immense amount of calcium and special, sulfur-containing polysaccharides.
Punica Granatum Fruit Extract
Est. %2
Function
Origin
Punica Granatum Fruit ExtractA pomegranate fruit extract that contains antioxidant polyphenols and a rare emollient punicic acid. It is aimed at dry, irritated skin.
Sea Water
Est. %1.5
Function
Origin
Sea WaterA water obtained from oceans, seas, and large saltwater lakes. The water has been purified, and what remains is a complex mixture of various mineral salts that have beneficial effects on the skin. Sea water is used as a humectant and a solvent.
Hydrolyzed Gardenia Florida Extract
Est. %1.3
Function
Origin
Hydrolyzed Gardenia Florida Extract
Magnesium Ascorbyl Phosphate
Est. %1
Function
Origin
Magnesium Ascorbyl PhosphateOne of the best-researched derivatives of vitamin C. It is more resistant to light and air and retains all the properties of ascorbic acid – antioxidant, collagen-boosting, and anti-pigmentation, but with less irritation.
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.
Glycerin
Est. %0.3
Function
Origin
Glycerin

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

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.
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.
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.
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.
Lonicera Caprifolium (Honeysuckle) Flower Extract
Est. %0.3
Function
Origin
Lonicera Caprifolium (Honeysuckle) Flower ExtractA fragrant extract derived from the flowers of the Italian honeysuckle. It has a pleasant, sweet, floral scent. Not much is known about its compounds and their functions.
Lonicera Japonica (Honeysuckle) Flower Extract
Est. %0.3
Function
Origin
Lonicera Japonica (Honeysuckle) Flower ExtractAn extract from the white flowers of the Japanese honeysuckle. Apart from an essential oil responsible for its jasmine-like scent, the extract also contains antioxidant and anti-inflammatory iridoids, flavonoids, and phenolic acids.