Versus

Numbuzin No.4 Full-Nutrient Firming Cream Versus Numbuzin No.9 Secret Firming Serum

General Moisturizer
Serum
Korean Brand South Korea
Korean Brand South Korea

Updated on August 20, 2024

Overview

What they are

These products are both cruelty-free and reef safe . They have a total of 15 ingredients in common

Cool Features

They both contain hyaluronic acid, niacinamide and peptides

Suited For

They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots

Free From

They both do not contain any harsh alcohols, parabens or sulfates

What's Inside

They both contain fragrances, oils and silicones

We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.

Ingredient Info

Click any item below to learn more and see relevant ingredients

About this product

About this product

At a glance

Click on any of the items below to learn more

Key Ingredients

Benefits

Concerns

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

found in both products
No.4 Full-Nutrient Firming Cream

Panax Ginseng Root Extract

Emollient
Helps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation Icon

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin IconHelps brighten skin Icon

Caprylic/Capric Triglyceride

Masking

Water

Skin Conditioning

Betaine

Humectant
Helps hydrate Dry Skin IconHelps reduce irritation IconGood for Dark Spots Icon

Cyclohexasiloxane

Emollient
Silicon Icon

Butyrospermum Parkii Butter

Skin Conditioning
Helps hydrate Dry Skin IconMay worsen Oily Skin IconBad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Polyglyceryl-3 Methylglucose Distearate

Emulsifying
Not safe for Fungal Acne Icon

Behenyl Alcohol

Emollient
Fatty Alcohol Icon

Niacinamide

Smoothing
Niacinamide IconGood for Oily Skin IconHelps reduce Skin Redness IconHelps reduce irritation IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Dark Spots IconGood for Scar Healing IconHelps fight Acne IconHelps brighten skin Icon

Macadamia Integrifolia Seed Oil

Skin Conditioning
Oil IconNot safe for Fungal Acne Icon

Pentaerythrityl Tetraethylhexanoate

Emollient

Hydrogenated Polydecene

Emollient

Cyclopentasiloxane

Emollient
Silicon Icon

Glyceryl Stearate

Emollient
1 / 0 Not safe for Fungal Acne Icon

Cetyl Alcohol

Emollient
2 / 2 Fatty Alcohol Icon

Polyglycerin-3

Humectant

Hydrogenated Poly(C6-14 Olefin)

Emollient

Dioscorea Japonica Root Extract

Skin Conditioning

Centella Asiatica Extract

Cleansing
Helps reduce Skin Redness IconHelps reduce irritation Icon

Ficus Carica Fruit Extract

Humectant

Elaeis Guineensis Oil

Emollient
Oil IconNot safe for Fungal Acne Icon

Calendula Officinalis Flower Oil

Masking
Fragrance IconOil IconHelps reduce Skin Redness IconHelps reduce irritation Icon

Hydrogenated Lecithin

Emulsifying

Sodium Hyaluronate

Humectant
0 / 0 Hyaluronic Acid Icon

Pentaerythrityl Distearate

Emulsifying
Not safe for Fungal Acne Icon

Polyglyceryl-10 Laurate

Skin Conditioning
Not safe for Fungal Acne Icon

Beta-Glucan

Skin Conditioning
Helps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation Icon

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

Emulsion Stabilising

Methylpropanediol

Solvent

Dimethiconol

Emollient
Silicon Icon

Sodium Stearoyl Glutamate

Cleansing

Polyquaternium-51

Skin Conditioning

Acrylates/C10-30 Alkyl Acrylate Crosspolymer

Emulsion Stabilising

Hydrolyzed Ginseng Root

Skin Conditioning

Glycosyl Trehalose

Emulsion Stabilising

Tromethamine

Buffering

Hydrogenated Starch Hydrolysate

Humectant

Adenosine

Skin Conditioning
Good for Minimizing Pores IconGood for Scar Healing Icon

Raffinose

Skin Conditioning

Disodium EDTA

Sorbitan Isostearate

Emulsifying
1-2 / 0 Not safe for Fungal Acne Icon

Cetearyl Alcohol

Emollient
2 / 1 Fatty Alcohol IconMay worsen Oily Skin IconBad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Lecithin

Emollient

Glyceryl Stearate Se

Emulsifying
3 / 2 Bad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Hydrolyzed Corn Starch

Humectant

Panthenol

Skin Conditioning
0 / 0 Helps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation Icon

Cholesterol

Emollient
0 / 0 Helps hydrate Dry Skin Icon

Sucrose

Humectant

Ceramide NP

Skin Conditioning
Ceramide IconHelps hydrate Dry Skin IconHelps reduce irritation IconHelps with Anti-Aging Icon

Cyanocobalamin

Skin Conditioning

Folic Acid

Skin Conditioning

Biosaccharide Gum-1

Skin Conditioning

Hydroxydecyl Ubiquinone

Antioxidant
Antioxidant Icon

Palmitoyl Pentapeptide-4

Skin Conditioning
Peptide IconHelps with Anti-Aging IconNot safe for Fungal Acne Icon

Retinol

Skin Conditioning
Retinoid IconGood for Oily Skin IconGood for Skin Texture IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Dark Spots IconGood for Scar Healing IconHelps fight Acne IconHelps brighten skin IconMay worsen Rosacea Icon

1,2-Hexanediol

Skin Conditioning

Parfum

Masking
Fragrance IconMay worsen Eczema IconMay worsen Rosacea Icon

Hydroxyacetophenone

Antioxidant
Antioxidant Icon

Ethylhexylglycerin

Skin Conditioning
No.9 Secret Firming Serum

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Humectant, Skin Conditioning, Skin Protecting

Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.

A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.

As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.

Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.

Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.

In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.

This ingredient is organic, colorless, odorless, and non-toxic.

Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.

Learn more about Glycerin
Skin Conditioning, Solvent

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.

You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Stay hydrated!

Learn more about Water
Skin Conditioning

Butyrospermum Parkii Butter is a plant lipid from the fruit of the Shea Tree. It is an effective skin hydrator and emollient.

Emollients help soothe and soften your skin. It does this by creating a protective film on your skin. This barrier helps trap moisture and keeps your skin hydrated. Emollients may be effective at treating dry or itchy skin.

Shea butter is rich in antioxidants. Antioxidants help fight free-radicals, or molecules that may harm the body. It is also full of fatty acids including stearic acid and linoleic acid. These acids help replenish the skin and keep skin moisturized.

While Shea Butter has an SPF rating of about 3-4, it is not a sunscreen replacement.

Shea butter may not be fungal acne safe. We recommend speaking with a professional if you have any concerns.

Learn more about Butyrospermum Parkii Butter

Polyglyceryl-3 Methylglucose Distearate is created from the diester of stearic acid and the condensation product of methylglucose and Polyglycerin-3.

As an emulsifier, it is used to bind ingredients together. Many ingredients, such as oils and water, separate naturally. Emulsifiers prevent them from separating to ensure even consistency in texture.

One of the manufacturer for this ingredient states it is vegetable-based. It is also claimed to be stable at both high and low temperatures.

This ingredient may not be safe for fungal acne. We recommend speaking with a professional if you have any concerns.

Learn more about Polyglyceryl-3 Methylglucose Distearate
Smoothing

Niacinamide has emerged as an all-star ingredient due to its many benefits.

It is known to treat acne by reducing inflammation. It also helps fade dark-spots and strengthen the skin by promoting the growth of the ceramide barrier.

Other benefits include smoothing wrinkles and minimizing redness.

The cherry on top? Niacinamide can also help build keratin, a protein that keeps skin firm.

When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.

Niacinamide can be mixed with other ingredients to boost benefits. For instance, it has shown to be effective when used with copper, folic acid, and zinc to treat acne.

Learn more about Niacinamide

Pentaerythrityl Tetraethylhexanoate is an emollient that helps make your skin smooth and hydrated. It specializes in creating a non-oily and "wet" feeling on skin.

This ingredient comes from isostearic acid, a saturated fatty acid. It is a synthetic ingredient.

Emollient, Emulsifying

Glyceryl Stearate is a mix of glycerin and stearic acid.

It is used to stabilize the mixing of water and oil ingredients. By preventing these ingredients from separating, it can help elongate shelf life. It can also help thicken the product's texture.

As an emollient, it helps soften skin and supports barrier-replenishing ingredients.

In cosmetics, Glyceryl Stearate is often made from vegetable oils or synthetically produced.

This ingredient may not be fungal-acne safe

Fun fact: The human body also creates Glyceryl Stearate naturally.

Learn more about Glyceryl Stearate
Emollient, Skin Conditioning

We don't have a description for Hydrogenated Poly(C6-14 Olefin) yet.

Buffering, Masking

Tromethamine helps balance the pH and improve the texture of a product. It is synthetically created.

As an emulsifier, Tromethamine prevents oil and water ingredients from separating. This helps stabilize the product and elongate a product's shelf life. Tromethamine also makes a product thicker.

Tromethamine helps balance the pH level of a product. Normal pH level of skin is slightly acidic (~4.75-5.5). The acidity of our skin is maintained by our glands and skin biome. Being slightly acidic allows our skin to create an "acid mantle". This acid mantle is a thin barrier that protects our skin from bacteria and contaminants.

Oral Tromethanmine is an anti-inflammatory drug but plays the role of masking, adding fragrance, and/or balancing pH in skincare.

1,3-Propanediol, 2-amino-2-(hydroxymethyl)-

Learn more about Tromethamine
Skin Conditioning

Adenosine is in every living organism. It is one of four components in nucleic acids that helps store our DNA.

Adenosine has many benefits when used. These benefits include hydrating the skin, smoothing skin, and reducing wrinkles. Once applied, adenosine increases collagen production. It also helps with improving firmness and tissue repair.

Studies have found adenosine may also help with wound healing.

In skincare products, Adenosine is usually derived from yeast.

Learn more about Adenosine

Disodium EDTA plays a role in making products more stable by aiding other preservatives.

It is a chelating agent, meaning it neutralizes metal ions that may be found in a product.

Disodium EDTA is a salt of edetic acid and is found to be safe in cosmetic ingredients.

Learn more about Disodium EDTA
Emollient, Emulsifying, Emulsion Stabilising

Cetearyl alcohol is a mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is mainly used as an emulsifier. Emulsifiers help prevent the separation of oils and products. Due to its composition, it can also be used to thicken a product or help create foam.

Cetearyl alcohol is an emollient. Emollients help soothe and hydrate the skin by trapping moisture.

Studies show Cetearyl alcohol is non-toxic and non-irritating. The FDA allows products labeled "alcohol-free" to have fatty alcohols.

This ingredient is usually derived from plant oils such as palm, vegetable, or coconut oils. There is debate on whether this ingredient will cause acne.

Due to the fatty acid base, this ingredient may not be Malassezia folliculitis safe.

Learn more about Cetearyl Alcohol
Humectant, Masking, Skin Conditioning

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

  • It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
  • It is a humectant, which means that it helps attract moisture into the skin.
  • It helps improve product application.
  • It has mild preservative properties.

Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.

Skin Conditioning, Solvent

1,2-Hexanediol is a synthetic liquid and another multi-functional powerhouse. 

It is a:

  • Humectant, drawing moisture into the skin
  • Emollient, helping to soften skin
  • Solvent, dispersing and stabilizing formulas
  • Preservative booster, enhancing the antimicrobial activity of other preservatives 
Skin Conditioning

Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.

You might see Ethylhexylglycerin often paired with other preservatives such as phenoxyethanol. Ethylhexylglycerin has been found to increase the effectiveness of these other preservatives.

When to use

26 Routines
31% use in am
69% use in pm
92% use every day
When to use See routines that use it ->
14 Routines
21% use in am
79% use in pm
79% use every day