Beauty of Joseon Red Bean Water Gel Versus Numbuzin No. 5 Daily Multi-Vitamin Cream

Beauty of Joseon Red Bean Water Gel Versus Numbuzin No. 5 Daily Multi-Vitamin Cream

This calming moisturizer is formulated around Panthenol and Allantoin to calm redness and hydrate skin.

This brightening moisturizer is formulated around Panthenol and Niacinamide to brighten dull-looking skin and fade the look of dark spots.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Butylene Glycol

Glycerin

1,2-Hexanediol

Methyl Trimethicone

Phaseolus Angularis Seed Extract

Acrylates/C10-30 Alkyl Acrylate Crosspolymer

Tromethamine

Glyceryl Glucoside

C12-14 Alketh-12

Maltodextrin

Ammonium Acryloyldimethyltaurate/Vp Copolymer

Dimethicone/Vinyl Dimethicone Crosspolymer

Dimethicone Crosspolymer

Ethylhexylglycerin

Betaine

Panthenol

Allantoin

Dipotassium Glycyrrhizate

Polyquaternium-51

Xanthan Gum

Disodium EDTA

Glyceryl Acrylate/Acrylic Acid Copolymer

Dioscorea Japonica Root Extract

Glucose

Sodium Citrate

Beta-Glucan

Hydrolyzed Corn Starch

Citric Acid

Sucrose

Magnesium Ascorbyl Phosphate

Caprylyl Glycol

Helianthus Annuus Seed Oil

Tocopherol

Cyanocobalamin

Glycine

Serine

Glutamic Acid

Aspartic Acid

Leucine

Acetyl Hexapeptide-8

Alanine

Lysine

Arginine

Tyrosine

Phenylalanine

Proline

Threonine

Valine

Isoleucine

Histidine

Cysteine

Methionine

Phosphoric Acid

Ascorbic Acid

Sh-Oligopeptide-1

Sh-Oligopeptide-2

Sh-Polypeptide-1

Water, Butylene Glycol, Glycerin, 1,2-Hexanediol, Methyl Trimethicone, Phaseolus Angularis Seed Extract, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Tromethamine, Glyceryl Glucoside, C12-14 Alketh-12, Maltodextrin, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Dimethicone/Vinyl Dimethicone Crosspolymer, Dimethicone Crosspolymer, Ethylhexylglycerin, Betaine, Panthenol, Allantoin, Dipotassium Glycyrrhizate, Polyquaternium-51, Xanthan Gum, Disodium EDTA, Glyceryl Acrylate/Acrylic Acid Copolymer, Dioscorea Japonica Root Extract, Glucose, Sodium Citrate, Beta-Glucan, Hydrolyzed Corn Starch, Citric Acid, Sucrose, Magnesium Ascorbyl Phosphate, Caprylyl Glycol, Helianthus Annuus Seed Oil, Tocopherol, Cyanocobalamin, Glycine, Serine, Glutamic Acid, Aspartic Acid, Leucine, Acetyl Hexapeptide-8, Alanine, Lysine, Arginine, Tyrosine, Phenylalanine, Proline, Threonine, Valine, Isoleucine, Histidine, Cysteine, Methionine, Phosphoric Acid, Ascorbic Acid, Sh-Oligopeptide-1, Sh-Oligopeptide-2, Sh-Polypeptide-1

Terminalia Ferdinandiana Fruit Extract

Methylpropanediol

Cetyl Ethylhexanoate

Cetearyl Alcohol

Niacinamide

Vinyldimethicone

Squalane

Caprylic/Capric Triglyceride

Butyrospermum Parkii Butter

Polymethylsilsesquioxane

Propanediol

Melia Azadirachta Flower Extract

Melia Azadirachta Leaf Extract

Curcuma Longa Root Extract

Ocimum Sanctum Leaf Extract

Theobroma Cacao Seed Extract

Corallina Officinalis Extract

Olea Europaea Leaf Extract

Phaseolus Lunatus Seed Extract

Citrus Aurantium Dulcis Oil

Hydrogenated Lecithin

Citrus Nobilis Peel Oil

Litsea Cubeba Fruit Oil

Rosa Canina Fruit Oil

Camellia Sinensis Leaf Water

Glyceryl Linolenate

Glyceryl Linoleate

Tocopheryl Acetate

Polyglyceryl-2 Stearate

Isononyl Isononanoate

Glyceryl Stearate Se

Glyceryl Stearate

Bisabolol

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

Stearyl Alcohol

3-O-Ethyl Ascorbic Acid

Behenyl Alcohol

Ascorbyl Tetraisopalmitate

Adenosine

Sorbitan Isostearate

Cholesterol

Hydroxydecyl Ubiquinone

Cyamopsis Tetragonoloba Gum

Agar

Dextrin

Ceramide NP

7-Dehydrocholesterol

Magnesium Myristate

Magnesium Stearate

Sea Salt

Acetyl Glucosamine

Zinc Gluconate

Calcium Stearate

Lactic Acid

Cetyl Hydroxyethylcellulose

Rutin

Ascorbyl Glucoside

Zinc PCA

Glutamine

Dipotassium Phosphate

Citrulline

Asparagine

Ornithine

Copper Tripeptide-1

Taurine

Tryptophan

Pantothenic Acid

Retinyl Palmitate

Repagermanium

Linolenic Acid

Riboflavin

Menadione

Biotin

Bioflavonoids

Sodium Ascorbyl Phosphate

Thiamine Hcl

Palmitoyl Tetrapeptide-7

Palmitoyl Tripeptide-1

Folic Acid

Pyridoxine

Hesperidin

Limonene

Citral

Terminalia Ferdinandiana Fruit Extract, Methylpropanediol, Glycerin, Cetyl Ethylhexanoate, Cetearyl Alcohol, Panthenol, Niacinamide, Betaine, Vinyldimethicone, Squalane, Caprylic/Capric Triglyceride, 1,2-Hexanediol, Methyl Trimethicone, Butyrospermum Parkii Butter, Polymethylsilsesquioxane, Propanediol, Melia Azadirachta Flower Extract, Melia Azadirachta Leaf Extract, Curcuma Longa Root Extract, Ocimum Sanctum Leaf Extract, Theobroma Cacao Seed Extract, Corallina Officinalis Extract, Olea Europaea Leaf Extract, Phaseolus Lunatus Seed Extract, Citrus Aurantium Dulcis Oil, Hydrogenated Lecithin, Citrus Nobilis Peel Oil, Litsea Cubeba Fruit Oil, Rosa Canina Fruit Oil, Camellia Sinensis Leaf Water, Water, Glyceryl Linolenate, Glyceryl Linoleate, Tocopheryl Acetate, Polyglyceryl-2 Stearate, Isononyl Isononanoate, Glyceryl Stearate Se, Glyceryl Stearate, Bisabolol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Stearyl Alcohol, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Tromethamine, Xanthan Gum, 3-O-Ethyl Ascorbic Acid, Behenyl Alcohol, Ascorbyl Tetraisopalmitate, Adenosine, Disodium EDTA, Butylene Glycol, Sorbitan Isostearate, Cholesterol, Hydroxydecyl Ubiquinone, Cyamopsis Tetragonoloba Gum, Agar, Dextrin, Ceramide NP, 7-Dehydrocholesterol, Magnesium Myristate, Magnesium Stearate, Sea Salt, Acetyl Glucosamine, Zinc Gluconate, Calcium Stearate, Lactic Acid, Cetyl Hydroxyethylcellulose, Rutin, Ascorbyl Glucoside, Zinc PCA, Glycine, Glutamic Acid, Glutamine, Dipotassium Phosphate, Lysine, Leucine, Methionine, Valine, Serine, Cysteine, Citrulline, Ascorbic Acid, Asparagine, Aspartic Acid, Isoleucine, Alanine, Arginine, Ornithine, Copper Tripeptide-1, Taurine, Tyrosine, Threonine, Tryptophan, Pantothenic Acid, Phenylalanine, Proline, Histidine, Retinyl Palmitate, Repagermanium, Linolenic Acid, Riboflavin, Magnesium Ascorbyl Phosphate, Menadione, Biotin, Bioflavonoids, Cyanocobalamin, Sodium Ascorbyl Phosphate, Tocopherol, Thiamine Hcl, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-1, Folic Acid, Pyridoxine, Hesperidin, Ethylhexylglycerin, Limonene, Citral

Reviews

Alternatives

Ingredients Explained

These ingredients are found in both products.

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

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

Acrylates/C10-30 Alkyl Acrylate Crosspolymer is a synthetic polymer. It is used to thicken, emulsify, and improve the texture of products.

As an emulsifier, it helps stabilize oil-in-water emulsions to give products an elegant feel when applied.

It can also form a thin protective film on skin. One study found that a formula using this polymer helped slow down how quickly other ingredients (like DEET) were absorbed through skin.

A 2024 study of over 1,300 patients confirmed that sensitization to this ingredient is rare. It is also non-mutagenic and has a clean track record.

Alanine is an amino acid and is already found in the human body. Our skin uses alanine to build collagen, elastin, and keratin.

Arginine is a semi-essential amino acid. This just means our bodies can product a bit on its own, but sometimes needs a little boost from food sources.

It is a part of your skin's natural moisturizing factor (NMF), or the water-loving molecules in your outermost layer of skin (stratum corneum) that keeps everything hydrated and happy.

Here's an interesting thing about Arginine: your skin converts it into urea through the Krebs-Henseleit urea cycle. Urea is one of the most effective humectants your skin naturally produces.

A clinical study showed applying 2.5% arginine hydrochloride to atopic dermatitis skin showed significant urea levels in the stratum corneum and improved moisture in just four weeks.

Arginine is also a precursor to nitric oxide; nitric oxide improves microcirculation and supports wound healing and collagen synthesis.

One study found that an amino acid complex containing Arginine reduced skin irritation, improved hydration, and accelerated skin repair in clinical / in-vivo studies.

Arginine itself is an amino acid and not a fatty acid, oil, or ester. On its own, it's not a direct food source for Malassezia, or the yeast that causes fungal acne.

Ascorbic Acid is is pure Vitamin C and is the biologically active form used directly by skin.

Not only is vitamin C great for your overall health and immune system, but it also has plenty of benefits for your skin. It is best supported by academic literature for:

Topical vitamin C has been shown to help neutralize oxidative stress from UV and pollution, helping to improve photoaging and hyperpigmentation when used consistently.

One clinical study found that using 5% topical vitamin C for six months improved signs of photodamaged skin, both on the surface and in the deeper structural layers of the skin.

While vitamin C doesn’t replace sunscreen, studies show it can boost photoprotection when combined with Vitamin E and ferulic acid. These two ingredients help improve stability and protective effects.

The big downside of this ingredient is formulation difficulty. Vitamin C is prone to oxidation and doesn't penetrate the skin unless formulated correctly. Research found that vitamin C absorbs into the skin best at a low pH (< 3.5) with about 20% being the upper limit for effective absorption.

Skin levels can saturate after repeated application; this means your skin won’t keep absorbing more once it’s full of vitamin C. This is why more isn’t always better with vitamin C and why very high concentrations don’t necessarily give extra benefits.

Ascorbic acid generally works well with many skincare ingredients but can be irritating when combined with other active ingredients. Strong oxidizing acne treatments like benzoyl peroxide can reduce the effectiveness of vitamin C if they are used at the same time; they are often recommended for use at different times of day.

Read more about other types of Vitamin C:

Foods rich with vitamin C include oranges, strawberries, broccoli, bell peppers, and more. When consuming Vitamin C, your skin receives a portion of the nutrients.

Aspartic Acid is an amino acid that our bodies produce naturally. It is an antioxidant.

Our body uses Aspartic Acid to help build collagen and elastin. It also plays a role in hydrating skin.

Betaine is a humectant. Like hyaluronic acid, it helps attract and retain moisture in the skin. It’s known for being gentle and for helping the skin maintain balanced hydration.

Betaine is mainly used to improve hydration and support calmer skin. It helps skin cells regulate water balance because it functions as an osmolyte.

Some studies suggest betaine may support making skin tone more even.

Fun fact: Betaine naturally exists in the skin and the body. In cosmetic products, it can be either plant-derived (most commonly from sugar beets) or synthetically produced for consistency and stability.

Betaine is also known as trimethylglycine.

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

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

Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.

Cyanocobalamin is the manufactured version of vitamin B12. It has skin soothing, antioxidant, and barrier protecting properties. Topical cyanocobalamin is used to treat skin irritation and atopic dermatitis.

Cysteine is a sulfur-containing amino acid that your body naturally makes and uses to build keratin (the protein in your hair, skin, and nails) and gluthatione (a major internal antioxidant).

In skincare, it's mostly added as an antioxidant. Some emerging research is also looking at its role in wound healing + evening out pigmentation though most of the pigmentation data comes from oral supplements rather than topical use).

Typical use concentrations for this ingredient are usually quite low (under 5% in leave-on skincare).

Safety data on cysteine specifically shows it's not a skin or eye irritant.

Disodium EDTA is a chelating agent. It grabs onto and deactivates metal ions that sneak into your products from water, packaging, or air.

This ingredient mainly works behind the scenes and helps with:

On top of that, this ingredient can counteract the effects of hard water by binding to the minerals in it.

One thing worth knowing is that Disodium EDTA has been shown to be a mild penetration enhancer. It can help other ingredients absorb into skin more effectively which can be a double-edged sword (great for actives, but can also make the active too strong if you have sensitive skin).

Clinical patch testing showed no significant skin irritation at typical use concentrations and minimal dermal absorption.

You'll most likely see this ingredient near the end of an ingredient list. It's typically found in concentrations less than 1%.

Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that:

The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure to patch test if you are unsure.

Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations.

Glutamic Acid is an amino acid that is found in all living organisms. Our bodies use this to help nerve cells in the brain communicate with other cells.

In cosmetics, glutamic acid is a famous humectant. It draws water from the air to your skin, keeping your skin hydrated (like hyaluronic acid).

An in-vitro study from 2024 found glutamic acid to play a role in inhibiting inflammation and thus a potential skin-soothing ingredient.

Other studies show it to be have potential wound healing, skin barrier repair, and hair growth properties.

Glutamic acid has poor solubility in water and other solvents.

Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.

Topically, glycerin does several things at once:

Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3.

Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin.

This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products.

Just know very high concentrations (>40%) can feel tacky in low humidity.

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

Glycine is the smallest amino acid and a key building block of collagen. It's part if your skin's Natural Moisturizing Factor (NMF), or the water-loving molecules in your outermost layer of skin (stratum corneum) that keeps everything hydrated and happy.

A study from 2022 found that an amino acid complex featuring taurine, arginine, and glycine significantly reduced skin irritation, improved redness, and accelerated the skin repair process.

Histidine is a semi-essential amino acid used by our bodies to create protein. It has humectant and skin conditioning properties.

Our bodies use histidine to create filaggrin - filaggrin is a structural protein that the skin uses in maintaining skin barrier.

One study found histidine and carnosine to be a dynamic duo for your skin:

Oral histidine has also been found to help with filaggrin-deficit skin disorders such as atopic dermatitis.

Why is it considered a semi-essential amino acid? This is because adults are able to create it but children must get it from their diet.

Isoleucine is an amino acid that helps reinforce our skin barrier. This amino acid plays a role in creating protein for the body.

Fun fact: Isoleucine is found in meat, fish, dairy, legumes, and nuts.

Leucine is a small amino acid and one of the building blocks your body uses to make proteins.

It's also naturally found in your skin as part of your Natural Moisturizing Factor (NMF). Your NMF is a mix of water-binding molecules that keeps the outer skin layer hydrated and flexible.

In skincare, it's mainly used as a skin conditioning ingredient that helps reinforce the same moisture-retention function.

You'll usually see it used at low percentages (generally under 5%) which is in line with how amino acids are used in cosmetics.

Lysine is an essential amino acid (your body cannot make it on its own). It has skin conditioning properties and one of the key players in collagen synthesis.

When your body creates collagen, lysine is basically the glue that holds everything together. It helps collagen fibers lock into each other and stay strong, with vitamin C being its trusty sidekick. Without enough lysine, this glue gets flimsy and less firm, resulting in less bouncy skin.

In skincare, lysine is mostly there to help keep your skin moisturized. It carries water through your skin's layers so everything stays plump.

So will putting lysine on your face create bouncier skin?

It's hard to say; most of the exciting collagen research on lysine comes from oral supplements or lab studies on mice. Further research is needed to truly understand what role topical lysine plays in skincare and your skin.

However, there's no harm in adding lysine to your routine as a supportive and hydrating ingredient.

Magnesium Ascorbyl Phosphate (MAP) is a water-soluble form of Vitamin C. It is used in skincare because it tends to be more formulation friendly than pure vitamin C (ascorbic acid).

According to research, MAP has three major benefits:

While MAP is gentler on the skin than ascorbic acid, it is thought to be less easily absorbed into the skin.

In a well-known absorption study, pure vitamin C increased skin vitamin C levels when formulated correctly, but derivatives like MAP did not in that experiment. This suggests MAP may not always convert into active vitamin C in the skin.

Due to MAP's stability up to a pH level of 7, it is more stable to air and sunlight exposure than ascorbic acid. The best pH range for MAP is between 5 and 6.

Methionine is a natural amino acid your skin already uses to make proteins and gluthatione (one of the body's key defense molecules against environmental stress like sun + pollution).

Its sulfur content makes it especially reactive with the free radicals that damage skin, giving it genuine antioxidant properties.

Usage percentages are usually under 1%, and usually as part of an amino acid mix designed to mimic what's naturally in skin.

One study used a combination of essential amino acids at 0.2% with supplemental methionine added and found significantly boosted collagen production in human skin.

Cosmetic industry reviewers have looked closely at methionine and other amino acids and found them well tolerated. Methionine is actually used as a "negative control" in lab tests designed to spot irritating ingredients because it doesn't cause a reaction.

Methyl Trimethicone is a type of silicone. It is a solvent and emulsifier.

Solvents are used to keep ingredients together in a product. They can help dissolve ingredients to stable bases or help evenly distribute ingredients throughout the product.

Emulsifiers help stabilize a product. It does this by preventing certain ingredients from separating.

Methyl Trimethicone does not get absorbed into the skin.

Panthenol is a common ingredient that helps hydrate and soothe the skin. It is found naturally in our skin and hair.

There are two forms of panthenol: D and L.

D-panthenol is also known as dexpanthenol. Most cosmetics use dexpanthenol or a mixture of D and L-panthenol.

Panthenol is famous due to its ability to go deeper into the skin's layers. Using this ingredient has numerous pros (and no cons):

Like hyaluronic acid, panthenol is a humectant. Humectants are able to bind and hold large amounts of water to keep skin hydrated.

This ingredient works well for wound healing. It works by increasing tissue in the wound and helps close open wounds.

Once oxidized, panthenol converts to pantothenic acid. Panthothenic acid is found in all living cells.

This ingredient is also referred to as pro-vitamin B5.

Phenylalanine is an amino acid. It is a skin soothing and hydrating ingredient. Amino acids play a crucial role in wound healing and skin hydration.

This ingredient is also used to help even out skin tone due to its ability to disrupt the melanin production process.

Two structures of phenylalanine exist: L-phenylalanine and D-phenylalanine. L-phenylalanine is essential, this means our bodies cannot produce it naturally and we must get it from foods. Our bodies convert D-phenylalanine to neurotransmitters, and D-phenylalanine is found in our bodies naturally.

Some foods that contain L-phenylalanine include eggs, soybeans, beef, milk.

Proline is a non-essential amino acid, meaning your body can make it on its own. In skincare, it is a skin conditioning ingredient that keeps skin soft and hydrated.

It makes up about 23% of the collagen molecule (collagen is the protein responsible for keeping your skin firm) and is involved in your skin's natural hyaluronic acid production. When applied topically, proline can penetrate the skin fairly well due to its small molecular size.

Reviews of this ingredient have found it to be neither a dermal irritant nor a sensitizer.

Fun fact: Proline can be found in protein-rich foods like meat, fish, eggs, and dairy.

Serine is a non-essential amino acid (your body makes it on its own!). It is a major player in your skin's natural moisturizing factor (NMF), or the water-loving molecules in your outermost layer of skin (stratum corneum) that keeps everything hydrated and happy.

Serine is one of your NMF's most abundant components that works as a skin-identical humectant. Its hydroxyl group grabs onto water molecules to boost hydration without any heaviness or occlusion.

Research on a hydrogel with serine confirmed this serine got delivered to your stratum corneum and demonstrated enhanced skin moisturization.

Interestingly serine also helps your skin produce filaggrin, a protein that keeps your skin barrier strong and used to create collagen.

Threonine is an amino-acid. It helps hydrate the skin and has antioxidant benefits.

Our skin uses threonine for creating collagen and elastin. Humans are not able to create threonine and must get it through eating foods such as fish, lentils, poultry, sesame seeds, and more.

Tocopherol is a fat-soluble antioxidant known as Vitamin E.

You'll find this ingredient in the vast majority of skincare (for good reason). It works to neutralize free radicals, or unstable molecules generated by UV exposure, pollution, and other environmental stressors, before they can cause oxidative damage to your skin cells.

Topically applied tocopherol has been shown to protect against UV damage by ramping up the skin's own natural defense enzymes.

It also acts as a skin conditioning agent; some studies show that regular topical use can improve the skin's water-binding capacity over 2-4 weeks.

This ingredient is especially loved for being a team player. When combined with Vitamin C, the photoprotective effect of both ingredients roughly doubles and the combo also helps reduce UV-induced DNA damage.

This ingredient has some brightening potential but it's more of a prevention ingredient than spot-fader. Cell studies show it can slow down melanin production but it's worth noting that it's not the most powerful brightener out there.

In formulations, it also serves as a stabilizer that helps protect other oxidation-prone ingredients from degrading.

Concentrations usually range from 0.1-1% in most leave-on products.

Tromethamine (aka THAM) is a synthetic amino acid that shows up in skincare as a helper ingredient.

It functions as a pH adjuster to help neutralize acidic ingredients and set a formula's pH to the right spot.

This matters a lot because a lot of actives (like vitamin C) needs a specific pH to work well and feel comfortable on skin.

Concentration use ranges from 0.1-1.0% depending on the formula.

Tyrosine is one of the amino acids your body already uses as a protein building block. In skincare, it shows up as a skin-conditioning agent.

It's most notable for being the raw material that your skin's tyrosinase enzyme converts into melanin (skin pigment); this is why it's sometimes marketed as a "tan accelerator" in products.

However, the tanning claim is shaky. Lab studies on isolated skin cells show tyrosine can boost melanin production at fairly high concentrations but hasn't shown to speed up/deepen a tan when applied directly to skin in animal studies (up to 0.05%).

Finished cosmetic products use it at low levels (generally well under 1%). At these amounts, it's considered non-irritating and non-sensitizing based on repeat-use patch testing.

Allergy-wise, plain tyrosinase hasn't shown sensitization issues but a chemically modified relative called Oleoyl Tyrosine has had a handful of cases.

Valine is one of the essential amino acids (meaning your body can't make it on its own and has to get it from food).

In skincare, it's usually synthetically-made or pulled from plant proteins like soy.

It's one of the small building blocks that make up your skin's natural moisturizing factor (NMF), or the built-in system that helps skin hold onto water. So its main job in a formula is to give the skin gentle hydration and help it feel more comfortable.

Typical amounts are very tiny: roughly 0.00004%-0.5% in leave on products and up to 1% in rinse-off ones.

The Cosmetic Ingredient Review panel has looked at this ingredient and found no evidence of it being a skin irritant or allergen at cosmetic levels.

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. Remember to stay hydrated!

Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.

On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.

Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.

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