Skin science article
Meditherapy Hyaluronic Acid Skin Booster First Serum Versus Torriden Dive-In Low-Molecular Hyaluronic Acid Serum
Meditherapy Hyaluronic Acid Skin Booster First Serum Versus Torriden Dive-In Low-Molecular Hyaluronic Acid Serum This hydrating serum is formulated around Ectoin and Sodium Hyaluronate to hydrate skin and strengthen the skin barrier. This hydrating serum is fo
Meditherapy Hyaluronic Acid Skin Booster First Serum Versus Torriden Dive-In Low-Molecular Hyaluronic Acid Serum
This hydrating serum is formulated around Ectoin and Sodium Hyaluronate to hydrate skin and strengthen the skin barrier.
This hydrating serum is formulated around Panthenol and Hydrolyzed Hyaluronic Acid to hydrate skin and strengthen the skin barrier.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Propanediol
Butylene Glycol
Glycerin
Tripropylene Glycol
Diethoxyethyl Succinate
1,2-Hexanediol
Ectoin
Hydroxyacetophenone
Glycereth-25 PCA Isostearate
Sodium Hyaluronate
Poloxamer 407
Arginine
Carbomer
Ethylhexylglycerin
Disodium EDTA
Xanthan Gum
Asiaticoside
Asiatic Acid
Madecassic Acid
Hyaluronic Acid
Hydrolyzed Hyaluronic Acid
Sodium Hyaluronate Crosspolymer
Water, Propanediol, Butylene Glycol, Glycerin, Tripropylene Glycol, Diethoxyethyl Succinate, 1,2-Hexanediol, Ectoin, Hydroxyacetophenone, Glycereth-25 PCA Isostearate, Sodium Hyaluronate, Poloxamer 407, Arginine, Carbomer, Ethylhexylglycerin, Disodium EDTA, Xanthan Gum, Asiaticoside, Asiatic Acid, Madecassic Acid, Hyaluronic Acid, Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate Crosspolymer
Dipropylene Glycol
Panthenol
Sodium Acetylated Hyaluronate
Hydrolyzed Sodium Hyaluronate
Allantoin
Glycyrrhiza Glabra Root Extract
2,3-Butanediol
Trehalose
Betaine
Portulaca Oleracea Extract
Hamamelis Virginiana Leaf Extract
Madecassoside
Ceramide NP
Beta-Glucan
Malachite Extract
Cholesterol
Pentylene Glycol
Glyceryl Acrylate/Acrylic Acid Copolymer
Pvm/Ma Copolymer
Polyglyceryl-10 Laurate
Tromethamine
Scutellaria Baicalensis Root Extract
Paeonia Suffruticosa Root Extract
Water, Butylene Glycol, Glycerin, Dipropylene Glycol, 1,2-Hexanediol, Panthenol, Sodium Hyaluronate Crosspolymer, Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate, Sodium Acetylated Hyaluronate, Hydrolyzed Sodium Hyaluronate, Allantoin, Ectoin, Glycyrrhiza Glabra Root Extract, 2,3-Butanediol, Trehalose, Betaine, Propanediol, Portulaca Oleracea Extract, Hamamelis Virginiana Leaf Extract, Madecassoside, Madecassic Acid, Ceramide NP, Beta-Glucan, Malachite Extract, Cholesterol, Pentylene Glycol, Glyceryl Acrylate/Acrylic Acid Copolymer, Pvm/Ma Copolymer, Polyglyceryl-10 Laurate, Xanthan Gum, Tromethamine, Carbomer, Ethylhexylglycerin, Scutellaria Baicalensis Root Extract, Paeonia Suffruticosa Root Extract
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
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.
Carbomer is a synthetic thickening and gelling agent. It's basically the ingredient that gives a lot of serums, gels, creams, and sunscreens their smooth, non-sticky texture.
Although legally permitted at very high levels, carbomers are normally used at concentrations below 1%.
It also needs to be neutralized to actually thicken, and because it is a large molecule, it doesn't really penetrate the skin barrier.
Allergy-wise, the risk is very low. Clinical studies show carbomers have low potential for skin irritation/sensitization even at concentrations up to 100%.
A 2024 UK study patch-tested 1,302 patients and found true allergy to the parent group of carbomer to be rare with no confirmed relevant reactions.
Ectoin is a compound found naturally in some species of bacteria. It can be synthetically created for skincare use.
This ingredient is an osmolyte; Osmolytes help organisms survive osmotic shock (it protects them from extreme conditions). It does this by influencing the properties of biological fluids within cells.
When applied to the skin, ectoin helps bind water molecules to protect our skin. The water forms a sort of armor for the parts of our skin cells, enzymes, proteins, and more.
Besides this, ectoin has many uses in skincare:
A study from 2004 found ectoin to counteract the damage from UV-A exposure at different cell levels. It has also been shown to protect skin against both UV-A, UV-B rays, infrared light, and visible light.
Studies show ectoin to have dual-action pollution protection: first, it protects our skin from further pollution damage. Second, it helps repair damage from pollution.
In fact, ectoin has been shown to help with:
Fun fact: In the EU, ectoin is used in inhalation medication as an anti-pollution ingredient.
Ectoin is a highly stable ingredient. It has a wide pH range of 1-9. Light, oxygen, and temperature do not affect this ingredient.
The chemical name for this ingredient is Tetrahydromethylpyrimidine Carboxylic Acid.
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.
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.
Madecassic Acid is one of the four star actives in Centella Asiatica. In skincare, it earns its keep as a calming and repairing ingredient.
It works through the same core pathways as the rest of the centella family.
First, it turns down inflammation so it helps with things like redness and general upset skin.
Second, it acts as an antioxidant which means it helps protect skin from daily stress and damage.
And third, it nudges the skin to make more collagen and rebuild its support structure.
That combination is why the whole Centella family is known for calming skin, strengthening the barrier, fading redness, and giving anti-aging benefits.
It's worth being honest about the evidence here; a lot of the strongest data is on the full extract or a Madecassoside/Asiaticoside rather than Madecassic Acid alone. Reviewers also note more long-term clinical trials are needed to confirm the full potential.
Concentration-wise, this ingredient is rarely used pure and usually shows up as part of a standardized centella extract where reported content ranges from 0.02-3.06%.
Finished products typically run somewhere in the 0.1-10% range depending on the format.
In real-world tolerance tests, a repeat-insult patch test on an eye lotion with 0.2% Centella extract showed no irritation or allergic contact dermatitis in 54 subjects. And a mascara with 0.5% Madecassoside caused neither irritation nor sensitization in 109 subjects.
Allergy risk is very low, but not zero. Centella and its constituents are classified as weak contact sensitizers and some rare cases of allergic contact dermatitis exist.
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.
Sodium Hyaluronate is the salt form of hyaluronic acid. It is a long sugar chain that is naturally found in your skin, joints, and connective tissue that maintains hydration and elasticity.
In skincare, it works as a humectant. It pulls water from the environment and deeper layers of skin and binds it to the surface.
Interestingly, the size of the molecule affects its behavior:
Some clinical evidence links low molecular weight versions to improved wrinkle depth, elasticity, anti-inflammatory effects, and barrier repair.
Many serums use a blend of both weights so you can get surface hydration plus longer-lasting and deeper effects.
You'll typically see concentrations between 0.1-2% for this ingredient.
Sodium Hyaluronate Crosspolymer is a crosslinked version of sodium hyaluronate. This just means it's linked into a 3D mesh network that lets it be more stable and sit on skin as a cohesive, gel-like film rather than sinking into skin.
A 2016 human skin study found crosslinked HA increased epidermal water content by 7.6% over the control group and reduced transepidermal water loss by 27.8%.
A follow-up clinical trial found that a topical crosslinked HA serum applied after fillers, microneedling, or chemical peels was well-tolerated and enhanced skin quality at 14 / 28 days.
More recent research suggests that concentrations as low as 0.03% can act as a penetration enhancer for other skincare actives.
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.