Skin science article
Beauty of Joseon Light On Serum : Centella + Vita C Versus Anua Green Lemon Vita C Blemish Serum
Beauty of Joseon Light On Serum : Centella + Vita C Versus Anua Green Lemon Vita C Blemish Serum This brightening serum is formulated around Centella Asiatica Extract and 3-O-Ethyl Ascorbic Acid to brighten dull-looking skin and calm redness. This brightening
Beauty of Joseon Light On Serum : Centella + Vita C Versus Anua Green Lemon Vita C Blemish Serum
This brightening serum is formulated around Centella Asiatica Extract and 3-O-Ethyl Ascorbic Acid to brighten dull-looking skin and calm redness.
This brightening serum is formulated around Ascorbic Acid and Ferulic Acid to fade the look of dark spots and brighten dull-looking skin.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Centella Asiatica Extract
3-O-Ethyl Ascorbic Acid
Glycerin
Propanediol
Betaine
Dicaprylyl Carbonate
Methyl Trimethicone
Cetyl Ethylhexanoate
Panthenol
Laminaria Japonica Extract
Eclipta Prostrata Leaf Extract
Phellodendron Amurense Bark Extract
Citrus Unshiu Peel Extract
Brassica Oleracea Acephala Leaf Extract
Hydrolyzed Gardenia Florida Extract
Hydrogenated Lecithin
Cetearyl Alcohol
Water
Dimethicone/Vinyl Dimethicone Crosspolymer
Silica
Bisabolol
Potassium Cetyl Phosphate
Hydrolyzed Jojoba Esters
Cetearyl Olivate
Sorbitan Olivate
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Ammonium Acryloyldimethyltaurate/Beheneth-25 Methacrylate Crosspolymer
Xanthan Gum
Polyglyceryl-10 Myristate
Adenosine
Fructooligosaccharides
Beta-Glucan
Butylene Glycol
Sorbitan Isostearate
Hydrolyzed Hyaluronic Acid
Maltodextrin
Arginine
Carbomer
Ascorbic Acid Polypeptide
1,2-Hexanediol
Hydroxyacetophenone
Ethylhexylglycerin
Centella Asiatica Extract, 3-O-Ethyl Ascorbic Acid, Glycerin, Propanediol, Betaine, Dicaprylyl Carbonate, Methyl Trimethicone, Cetyl Ethylhexanoate, Panthenol, Laminaria Japonica Extract, Eclipta Prostrata Leaf Extract, Phellodendron Amurense Bark Extract, Citrus Unshiu Peel Extract, Brassica Oleracea Acephala Leaf Extract, Hydrolyzed Gardenia Florida Extract, Hydrogenated Lecithin, Cetearyl Alcohol, Water, Dimethicone/Vinyl Dimethicone Crosspolymer, Silica, Bisabolol, Potassium Cetyl Phosphate, Hydrolyzed Jojoba Esters, Cetearyl Olivate, Sorbitan Olivate, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Ammonium Acryloyldimethyltaurate/Beheneth-25 Methacrylate Crosspolymer, Xanthan Gum, Polyglyceryl-10 Myristate, Adenosine, Fructooligosaccharides, Beta-Glucan, Butylene Glycol, Sorbitan Isostearate, Hydrolyzed Hyaluronic Acid, Maltodextrin, Arginine, Carbomer, Ascorbic Acid Polypeptide, 1,2-Hexanediol, Hydroxyacetophenone, Ethylhexylglycerin
Citrus Limon Fruit Extract
Ascorbic Acid
Dipropylene Glycol
Cyclopentasiloxane
Cyclohexasiloxane
Sodium Hydroxide
C12-14 Alketh-12
Sodium Polyacryloyldimethyl Taurate
Polyacrylate Crosspolymer-6
Allantoin
Glutathione
Citrus Aurantium Dulcis Flower Oil
Litsea Cubeba Fruit Oil
Citrus Paradisi Peel Oil
Disodium EDTA
Citrus Aurantium Bergamia Fruit Oil
Mentha Viridis Leaf Oil
Tocopherol
Ferulic Acid
Barosma Betulina Leaf Extract
N-Butyl Alcohol
Polyglyceryl-10 Stearate
Sorbitol
Sodium Hyaluronate
Sodium Ascorbyl Phosphate
Caprylic/Capric Triglyceride
Helianthus Annuus Seed Oil
Hyaluronic Acid
Sucrose Stearate
Glyceryl Stearates
Beta-Carotene
Sodium Hyaluronate Crosspolymer
Niacinamide
Hydrolyzed Sodium Hyaluronate
Thioctic Acid
Lycopodium Clavatum Extract
Equisetum Arvense Extract
Sodium Acetylated Hyaluronate
Pyridoxine
Hydroxypropyltrimonium Hyaluronate
Folic Acid
Biotin
Ceramide NP
Ubiquinone
Cyanocobalamin
Thiamine Hcl
Riboflavin
Linoleic Acid
Hesperidin
Ergothioneine
Limonene
Linalool
Citral
Citrus Limon Fruit Extract, Ascorbic Acid, Propanediol, Butylene Glycol, Dipropylene Glycol, Cyclopentasiloxane, 1,2-Hexanediol, Cyclohexasiloxane, Sodium Hydroxide, C12-14 Alketh-12, Bisabolol, Sodium Polyacryloyldimethyl Taurate, Water, Polyacrylate Crosspolymer-6, Dimethicone/Vinyl Dimethicone Crosspolymer, Xanthan Gum, Ethylhexylglycerin, Allantoin, Glycerin, Glutathione, Citrus Aurantium Dulcis Flower Oil, Litsea Cubeba Fruit Oil, Adenosine, Citrus Paradisi Peel Oil, Disodium EDTA, Citrus Aurantium Bergamia Fruit Oil, Mentha Viridis Leaf Oil, Tocopherol, Ferulic Acid, Barosma Betulina Leaf Extract, N-Butyl Alcohol, Hydrogenated Lecithin, Polyglyceryl-10 Stearate, Sorbitol, Panthenol, Beta-Glucan, Sodium Hyaluronate, Sodium Ascorbyl Phosphate, Caprylic/Capric Triglyceride, Helianthus Annuus Seed Oil, Hyaluronic Acid, Sucrose Stearate, Glyceryl Stearates, Beta-Carotene, Sodium Hyaluronate Crosspolymer, Niacinamide, Hydrolyzed Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid, Thioctic Acid, Lycopodium Clavatum Extract, Equisetum Arvense Extract, Sodium Acetylated Hyaluronate, Pyridoxine, Hydroxypropyltrimonium Hyaluronate, Folic Acid, Biotin, Ceramide NP, Ubiquinone, Cyanocobalamin, Thiamine Hcl, Riboflavin, Linoleic Acid, Hesperidin, Ergothioneine, Limonene, Linalool, 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
Adenosine is a purine nucleoside that your body already makes in every cell. In skincare, it acts mainly as a skin conditioning and anti-aging agent.
The way it works is fairly well mapped out:
Your skin has cells called fibroblasts that build collagen (the stuff that keeps skin firm and smooth). Adenosine basically flips a switch on these cells that tells them to get to work making more collagen and other proteins. These cells slow down on their own as skin ages, so Adenosine helps give them a little nudge to keep going.
The clinical backing is pretty solid too.
A blind, randomized, placebo-controlled trial of 126 women aged 45-65 tested a 0.1% cream twice daily and found real improvements in crow's feet and frown lines using a precise 3D skin-mapping technique; these changes showed up by week 3 and held at 2 months.
A later study using Adenosine-loaded dissolving microneedle patches reported gains in wrinkle depth, dermal density, elasticity, and hydration.
On concentrations, South Korea's Ministry of Food and Drug Safety has set 0.04% as the approved functional anti-wrinkle level. You'll typically see this ingredient used somewhere in the 0.04-0.1% range since it works at low doses.
This ingredient has been found safe for cosmetics with the data showing no irritation or sensitization.
Overall, this is a great ingredient for any anti-aging routine and has no photosensitizing effect, so it suits both AM and PM use.
Beta-Glucan is a soluble polysaccharide (a chain of glucose sugars) sourced from the cells walls of oats, baker's yeast, mushrooms, and seaweed.
It's a rare ingredient that pulls double-duty as a heavy-duty hydrator and skin-soothing repair agent.
On the surface, it acts as a humectant that holds water in place and reduces moisture loss for a plumper, smoother feel, while its anti-inflammatory and antioxidant properties make it a great pick for calming redness or sensitive skin
The more interesting story is underneath:
Despite its large molecular size, oat beta-glucan has been shown to penetrate the epidermis and reach the dermis by slipping between skin cells. Here, it interacts with fibroblasts and macrophages to nudge collagen synthesis and support wound repair.
A small 2005 split-face clinical study of 27 subjects found topical beta-glucan produced measurable reductions in wrinkle depth, height, and roughness after 8 weeks of use.
It is worth noting the trial was small and the penetration testing used frozen, irradiated skin so the anti-aging data is encouraging rather than definitive.
This ingredient gets along with pretty much everything and is typically used around 0.1-1%.
Fungal acne: This ingredient is not a food source for the Malassezia yeast because it is a glucose polysaccharide with no fatty acid or ester component.
Bisabolol is a gentle skin conditioner, antioxidant, and soothing ingredient.
It's primary claim to fame is soothing and research shows topically applied bisabolol can quiet the chemical messengers that cause your skin to become inflamed, helping to sooth any irritation.
A clinical study found that applying 0.5% bisabolol daily for 8 weeks produced an average 9% decrease in skin pigmentation. Researchers found it can also suppress the process that leads to excess melanin production in skin.
In vitro studies found that bisabolol combined with propylene glycol significantly increased skin permeability by increasing lipid fluidity in the stratum corneum.
You'll likely see use concentrations quite low, usually 0.1-0.2%.
Overall, this is a well-tolerated ingredient that works well in formulas designed for sensitive, reactive, or post-procedure skin.
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.
This ingredient is a silicone elastomer that works as a texture enhancer, adds a silky slip, and also helps absorb excess oil.
Because it's a large macromolecule that's insoluble in water and chemically inert, it's not expected to penetrate or be absorbed into skin.
Human patch tests with a facial lotion containing 1% of this ingredient found no sensitization.
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.
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.
Hydrogenated Lecithin is a more stable version of lecithin.
It's made by taking lecithin (a phospholipid commonly found in soybeans and egg yolks) and hydrogenating it. This just means the unsaturated fatty acids are turned into saturated ones so they don't go bad as easily.
This ingredient is an emollient, emulsifier, and penetration enhancer. As an emollient, it helps soften and hydrate skin by trapping moisture within. As an emulsifier, it prevents oil and water ingredients from separating.
Hydrogenated Lecithin can form tiny spherical structures made of phospholipid bilayers called liposomes. These liposomes are able to capture compounds inside their structure and deliver them through the skin barrier.
Because phospholipids are a natural component of our cell membranes, this ingredient is inherently compatible with skin.
A 2021 study found lecithin-based surfactants were less harsh and more tolerable comared to Sodium Lauryl Sulfate (SLS).
Hydrolyzed Hyaluronic Acid is hyaluronic acid (HA) that is broken down into lower molecular weight fragments.
It's a humectant that pulls and holds water in the skin to help with hydration, plumpness, and reduce transepidermal water loss.
Because hydrolyzed hyaluronic acid is smaller in size, it can slip past your outermost layer of skin more easily than full-sized HA.
Most formulations will combine all sizes to get the best of both worlds.
Typical usage levels range from 0.01-1%. Any percentage higher than 2% might become goopy and tacky.
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.
Propanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.
It’s often used to:
Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.
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.