Tatcha Violet-C Brightening Serum 20% Vitamin C + 10% AHA Versus Paula's Choice C5 Super Boost Moisturizer
This brightening serum is formulated around Ascorbyl Tetraisopalmitate and Lactic Acid to brighten dull-looking skin and refine skin texture.
This brightening moisturizer is formulated around 3-O-Ethyl Ascorbic Acid and Ascorbyl Glucoside to brighten dull-looking skin.
What's inside
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningBis-Glyceryl Ascorbate
Antioxidant
Camellia Sinensis Leaf
Perfuming
Propanediol
Solvent
Butylene Glycol
Humectant
Glycerin
Humectant
Ascorbyl Tetraisopalmitate
Antioxidant
Angelica Acutiloba Root Extract
Skin ConditioningCallicarpa Japonica Fruit Extract
Skin ConditioningPrunus Mume Fruit Extract
Humectant
Crataegus Cuneata Fruit Extract
Skin ConditioningPyrus Malus Fruit Extract
Skin Conditioning
Citrus Paradisi Fruit Extract
Skin ConditioningCitrus Aurantium Dulcis Juice
Skin ConditioningCitrus Limon Juice
Skin Conditioning
Citrus Aurantifolia Juice
CleansingGlycyrrhiza Glabra Root Extract
Bleaching
Scutellaria Baicalensis Root Extract
Astringent
Artemisia Capillaris Flower Extract
Skin ConditioningMorus Alba Root Extract
BleachingZiziphus Jujuba Fruit Extract
Skin ConditioningSodium Hyaluronate
Humectant
Lactic Acid
Buffering
Sodium Citrate
BufferingDipotassium Glycyrrhizate
Humectant
Ammonium Acryloyldimethyltaurate/Carboxyethyl Acrylate Crosspolymer
Disodium EDTA
ChelatingPPG-6-Decyltetradeceth-30
EmulsifyingEthylhexylglycerin
Skin ConditioningPhenoxyethanol
Preservative
Water, Bis-Glyceryl Ascorbate, Camellia Sinensis Leaf, Propanediol, Butylene Glycol, Glycerin, Ascorbyl Tetraisopalmitate, Angelica Acutiloba Root Extract, Callicarpa Japonica Fruit Extract, Prunus Mume Fruit Extract, Crataegus Cuneata Fruit Extract, Pyrus Malus Fruit Extract, Citrus Paradisi Fruit Extract, Citrus Aurantium Dulcis Juice, Citrus Limon Juice, Citrus Aurantifolia Juice, Glycyrrhiza Glabra Root Extract, Scutellaria Baicalensis Root Extract, Artemisia Capillaris Flower Extract, Morus Alba Root Extract, Ziziphus Jujuba Fruit Extract, Sodium Hyaluronate, Lactic Acid, Sodium Citrate, Dipotassium Glycyrrhizate, Ammonium Acryloyldimethyltaurate/Carboxyethyl Acrylate Crosspolymer, Disodium EDTA, PPG-6-Decyltetradeceth-30, Ethylhexylglycerin, Phenoxyethanol
Water
Skin ConditioningDicaprylyl Carbonate
Emollient3-O-Ethyl Ascorbic Acid
Skin Conditioning
Dimethicone
Emollient
Butylene Glycol
Humectant
Polyglyceryl-6 Distearate
Emulsifying
Ascorbyl Glucoside
Antioxidant
Squalane
Emollient
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingAcetyl Sh-Hexapeptide-5 Amide Acetate
Skin Conditioning
Citrullus Lanatus Seed Oil
Emollient
Hydrogenated Lecithin
Emulsifying
Theobroma Cacao Seed Butter
Emollient
Hydrogenated Phosphatidylcholine
Emulsifying
Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
Antioxidant
Sodium Hyaluronate
Humectant
Oryza Sativa Bran Extract
Skin Conditioning
Propanediol
Solvent
Jojoba Esters
Emollient
Tocopherol
Antioxidant
Acetyl Zingerone
Antioxidant
Cetyl Palmitate
Emollient
Caprylyl Glycol
Emollient
Cetyl Alcohol
Emollient
Polyglyceryl-3 Beeswax
Emulsifying
Sodium Hydroxide
BufferingSorbitan Olivate
Emulsifying
Sorbitan Palmitate
Emulsifying
Helianthus Annuus Extract
Emollient
Ethylhexylglycerin
Skin ConditioningHexylene Glycol
EmulsifyingSodium Phytate
ChelatingPolysorbate 60
Emulsifying
Sorbitan Isostearate
Emulsifying
Lecithin
Emollient
Rosmarinus Officinalis Leaf Extract
AntimicrobialGlycine Soja Oil
Emollient
Lysolecithin
EmulsifyingBacillus Ferment
Skin Conditioning
Citric Acid
Buffering
Polyglutamic Acid
Skin Conditioning
Beta-Sitosterol
Emulsion Stabilising
Phytic Acid
Chelating
Squalene
Emollient
Phenoxyethanol
Preservative
Sodium Benzoate
Masking
Potassium Sorbate
Preservative
Water, Dicaprylyl Carbonate, 3-O-Ethyl Ascorbic Acid, Dimethicone, Butylene Glycol, Polyglyceryl-6 Distearate, Ascorbyl Glucoside, Squalane, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Acetyl Sh-Hexapeptide-5 Amide Acetate, Citrullus Lanatus Seed Oil, Hydrogenated Lecithin, Theobroma Cacao Seed Butter, Hydrogenated Phosphatidylcholine, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Sodium Hyaluronate, Oryza Sativa Bran Extract, Propanediol, Jojoba Esters, Tocopherol, Acetyl Zingerone, Cetyl Palmitate, Caprylyl Glycol, Cetyl Alcohol, Polyglyceryl-3 Beeswax, Sodium Hydroxide, Sorbitan Olivate, Sorbitan Palmitate, Helianthus Annuus Extract, Ethylhexylglycerin, Hexylene Glycol, Sodium Phytate, Polysorbate 60, Sorbitan Isostearate, Lecithin, Rosmarinus Officinalis Leaf Extract, Glycine Soja Oil, Lysolecithin, Bacillus Ferment, Citric Acid, Polyglutamic Acid, Beta-Sitosterol, Phytic Acid, Squalene, Phenoxyethanol, Sodium Benzoate, Potassium Sorbate
Reviews
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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.
Learn more about Butylene GlycolEthylhexylglycerin 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 EthylhexylglycerinPhenoxyethanol 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 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.
Learn more about Sodium HyaluronateWater. 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 Water
