Beauty Bay SkinHit Balancing Serum with Prebiotic + Postbiotic Versus SkinMedica TNS® Advanced+ Serum
This barrier-repair serum is formulated around Lactococcus Ferment Lysate and Alpha-Glucan Oligosaccharide to strengthen the skin barrier and calm redness.
What's inside
What's inside
Key Ingredients
No key ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningPentylene Glycol
Skin Conditioning
Human Neonatal Fibroblast Conditioned Media
Skin ConditioningGlycereth-7 Triacetate
EmollientShea Butter Ethyl Esters
Emollient
Glycerin
Humectant
Ethoxydiglycol
HumectantLactococcus Ferment Lysate
Skin Conditioning
Whey Protein
Skin ConditioningChlorella Vulgaris Extract
Skin ConditioningSaccharide Isomerate
Humectant
Dimer Tripeptide-43
Vitis Vinifera Flower Cell Extract
MaskingPyrus Malus Fruit Extract
Skin Conditioning
Hydroxyacetophenone
Antioxidant
Tocopheryl Acetate
Antioxidant
Propanediol
Solvent
Xanthan Gum
EmulsifyingPolyacrylate Crosspolymer-6
Emulsion StabilisingPolyacrylate-13
Polyisobutene
Sclerotium Gum
Emulsion StabilisingPEG-12 Dimethicone
Skin Conditioning
Lecithin
Emollient
Pullulan
Butylene Glycol
Humectant
Sodium Citrate
BufferingPolysorbate 20
Emulsifying
Aminomethyl Propanol
BufferingDisodium EDTA
Phenoxyethanol
Preservative
Ethylhexylglycerin
Skin ConditioningWater, Pentylene Glycol, Human Neonatal Fibroblast Conditioned Media, Glycereth-7 Triacetate, Shea Butter Ethyl Esters, Glycerin, Ethoxydiglycol, Lactococcus Ferment Lysate, Whey Protein, Chlorella Vulgaris Extract, Saccharide Isomerate, Dimer Tripeptide-43, Vitis Vinifera Flower Cell Extract, Pyrus Malus Fruit Extract, Hydroxyacetophenone, Tocopheryl Acetate, Propanediol, Xanthan Gum, Polyacrylate Crosspolymer-6, Polyacrylate-13, Polyisobutene, Sclerotium Gum, PEG-12 Dimethicone, Lecithin, Pullulan, Butylene Glycol, Sodium Citrate, Polysorbate 20, Aminomethyl Propanol, Disodium EDTA, Phenoxyethanol, Ethylhexylglycerin
Reviews
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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%.
Learn more about Disodium EDTAEthylhexylglycerin 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.
Learn more about EthylhexylglycerinLactococcus Ferment Lysate is a postbiotic created by fermenting Lactoccus lactis, a type of bacteria more commonly used to create Lactic acid.
Postbiotics are inactive molecules produced by probiotic bacteria that provide skin benefits.
This ingredient offers promising benefits, but it is relatively new and more evidence is needed to prove its efficacy. The manufacturer claims this ingredient:
A study from 2022 found this ingredient helped protect skin against damaged from UV exposure (though this should not replace your sunscreen!).
The lysate in the ingredient name refers to a fluid that forms from breaking down the cell membrane.
Learn more about Lactococcus Ferment LysatePhenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!).
It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome.
On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive.
Another perk of this ingredient is that it stays functional across a wide pH range (3-10).
You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own.
Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU.
Safety-wise, the fear mongering does not hold up to the evidence. The EU's Scientific Committee on Consumer Safety and FDA consider it safe as a preservative at up to 1%, including for children of all ages.
Adverse systemic effects only showed up in animal studies at exposures roughly 200x higher than what people get from cosmetics. And despite its very widespread use, this ingredient is a rare sensitizer and allergic reactions are uncommon.
Learn more about PhenoxyethanolPropanediol 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.
Learn more about PropanediolSodium Citrate is the sodium salts of citric acid. In skincare, it is used to alter pH levels and acts as a preservative.
Its main functions are to maintain the pH of a product and neutralize metal ions.
The acidity of our skin is maintained by our glands and skin biome; normal pH level of skin is slightly acidic (~4.75-5.5).
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.
Learn more about Sodium CitrateWater. 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!
Learn more about WaterXanthan 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.
Learn more about Xanthan Gum
