Skin science article
Virtue Flourish Density Booster Versus The Ordinary Multi-Peptide Serum for Hair Density
Virtue Flourish Density Booster Versus The Ordinary Multi-Peptide Serum for Hair Density What's inside Key Ingredients Benefits Concerns Ingredients Side-by-side Water Keratin Methyl Nicotinate Acetyl Tetrapeptide-3 Zingiber Officinale Root Extract Pisum Sativ
Virtue Flourish Density Booster Versus The Ordinary Multi-Peptide Serum for Hair Density
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Keratin
Methyl Nicotinate
Acetyl Tetrapeptide-3
Zingiber Officinale Root Extract
Pisum Sativum Extract
Nasturtium Officinale Extract
Moringa Oleifera Seed Extract
Jasminum Officinale Flower Extract
Hydrolyzed Linseed Extract
Hydrolyzed Hibiscus Esculentus Extract
Helianthus Annuus Seed Extract
Daucus Carota Sativa Root Extract
Cynara Scolymus Leaf Extract
Amaranthus Caudatus Seed Extract
Saccharomyces Lysate Extract
Larix Europaea Wood Extract
Trifolium Pratense Flower Extract
Camellia Sinensis Leaf Extract
Isochrysis Galbana Extract
Tocopherol
Mentha Piperita Oil
Dextran
Pentylene Glycol
Sodium Phytate
Sodium Dilauramidoglutamide Lysine
Quaternium-51
Ethylhexylglycerin
Sodium Metabisulfite
Glycine
Parfum
Biosaccharide Gum-4
Butylene Glycol
Glycerin
Zinc Chloride
PPG-26-Buteth-26
Propanediol
Polyacrylate Crosspolymer-6
PEG-40 Hydrogenated Castor Oil
T-Butyl Alcohol
Alcohol
Tetrasodium EDTA
Sodium Benzoate
Potassium Sorbate
Disodium EDTA
Phenoxyethanol
Citric Acid
Linalool
Geraniol
Limonene
Citronellol
Benzyl Benzoate
Citral
Hexyl Cinnamal
Water, Keratin, Methyl Nicotinate, Acetyl Tetrapeptide-3, Zingiber Officinale Root Extract, Pisum Sativum Extract, Nasturtium Officinale Extract, Moringa Oleifera Seed Extract, Jasminum Officinale Flower Extract, Hydrolyzed Linseed Extract, Hydrolyzed Hibiscus Esculentus Extract, Helianthus Annuus Seed Extract, Daucus Carota Sativa Root Extract, Cynara Scolymus Leaf Extract, Amaranthus Caudatus Seed Extract, Saccharomyces Lysate Extract, Larix Europaea Wood Extract, Trifolium Pratense Flower Extract, Camellia Sinensis Leaf Extract, Isochrysis Galbana Extract, Tocopherol, Mentha Piperita Oil, Dextran, Pentylene Glycol, Sodium Phytate, Sodium Dilauramidoglutamide Lysine, Quaternium-51, Ethylhexylglycerin, Sodium Metabisulfite, Glycine, Parfum, Biosaccharide Gum-4, Butylene Glycol, Glycerin, Zinc Chloride, PPG-26-Buteth-26, Propanediol, Polyacrylate Crosspolymer-6, PEG-40 Hydrogenated Castor Oil, T-Butyl Alcohol, Alcohol, Tetrasodium EDTA, Sodium Benzoate, Potassium Sorbate, Disodium EDTA, Phenoxyethanol, Citric Acid, Linalool, Geraniol, Limonene, Citronellol, Benzyl Benzoate, Citral, Hexyl Cinnamal
Caffeine
Biotinoyl Tripeptide-1
Scutellaria Baicalensis Root Extract
Triticum Vulgare Germ Extract
Glycine Soja Germ Extract
Apigenin
Oleanolic Acid
Arginine
Calcium Gluconate
Lactic Acid
Gluconolactone
Maltodextrin
Hydroxyethylcellulose
Xanthan Gum
Dimethyl Isosorbide
Polysorbate 20
Trisodium Ethylenediamine Disuccinate
Chlorphenesin
Water, Propanediol, Butylene Glycol, Glycerin, Caffeine, Biotinoyl Tripeptide-1, Acetyl Tetrapeptide-3, Larix Europaea Wood Extract, Pisum Sativum Extract, Scutellaria Baicalensis Root Extract, Triticum Vulgare Germ Extract, Glycine Soja Germ Extract, Trifolium Pratense Flower Extract, Camellia Sinensis Leaf Extract, Apigenin, Oleanolic Acid, Arginine, Glycine, Calcium Gluconate, Zinc Chloride, Lactic Acid, Gluconolactone, Dextran, Maltodextrin, Hydroxyethylcellulose, Xanthan Gum, Pentylene Glycol, Dimethyl Isosorbide, Polysorbate 20, PPG-26-Buteth-26, PEG-40 Hydrogenated Castor Oil, Trisodium Ethylenediamine Disuccinate, Sodium Metabisulfite, Sodium Benzoate, Phenoxyethanol, Chlorphenesin
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Alternatives
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
This biometic peptide is designed to support hair growth.
According to a manufacturer, it stimulates hair growth by:
The manufacturer has found combining this ingredient with red clover extract (Capixyl) boosted benefits. Not only does it enforce the scalp's extracellular matrix, it also inhibits the enzyme that creates DHT, a hormone that leads to hair loss.
While this ingredient is promising, more research is still needed to confirm its full effectiveness.
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.
Camellia Sinensis Leaf Extract (tea extract) is one of the most well-researched plant extracts in skincare with an impressive resume.
Black tea, green tea, and oolong tea are all harvested from the Camellia Sinensis plant.
Studies show green tea extract and its catechins (like epigallocatechin gallate (EGCG)) help your skin cells product energy more efficiently and reducing the number of free-radicals that can damage your skin from the inside.
In lab-grown skin models, this translated to younger, healthier, and stronger skin.
There's also good sun protection data; researchers saw less DNA damage and redness on human skin when green tea was applied before UVB exposure. And the more they applied, the better the protection.
Needless to say, this ingredient shouldn't replace your sunscreen. But it is a great supportive ingredient that you can already find in many sunscreens and antioxidant serums.
A 2009 study found a 2% green tea lotion was effective for mild-to-moderate acne thanks to its anti-inflammatory and mild antimicrobial activity.
The quality of the extract matters a lot here:
Good extracts contain 50-90% catechins while lower quality ones are mostly there for marketing. We recommend reaching out to the brand if you have questions about the quality or source of their ingredients.
Human Repeated Insult Patch Testing showed no irritation or sensitization at use concentrations (0.86% in leave-on products and up to 30% as leaf water).
Dextran is a sugar (polysaccharide) with skin hydrating properties.
Fun fact: Louis Pasteur first discovered this ingredient as a microbial product in wine.
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.
Larix Europaea is a larch tree native to Europe.
It’s one of the key ingredients in Redensyl, an alternative to Minoxidil for hair growth. Redensyl works by targeting stem cells and fibroblasts from the top, inner layer of your skin.
The bark of Larix Europaea is rich in antioxidants and plant compounds such as flavonoids, spiro-polyphenols, and procyanidins.
Flavonoids are naturally occurring compounds found in many plantsand foods like tea, wine, and chocolate. They’re known for their strong antioxidant and anti-inflammatory properties.
PEG-40 Hydrogenated Castor Oil is an emulsifier derived from castor oil.
As an emulsifying agent, it helps other ingredients like fragrances and fat-soluble vitamins dissolve cohesively.
Due to its large molecule size, it doesn't penetrate beyond the skin's surface.
This ingredient has a solid regulatory track record; the CIR Expert Panel first concluded it was safe for use in cosmetics at concentrations up to 100% in 1997. A 2012 reassessment reaffirmed that finding. Safety studies have also found no irritation or evidence of toxicity.
A 2019 study did find this ingredient to grow Malassezia, so this ingredient may not be fungal acne safe.
Pentylene Glycol (1,2-pentanediol) is a multitasking little diol with three main roles in a formula:
Research on alkanediols (the family pentylene glycol belongs to) show they work by disrupting microbial cell membranes. This disruption helps the primary preservative system in a product work more effectively at lower doses.
On the safety side, the Cosmetic Ingredient Review Expert Panel has concluded this ingredient to be safe as used in current cosmetic practices + concentrations.
Typical use levels in a formula run about 1-5%.
Phenoxyethanol 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.
We don't have a description for Pisum Sativum Extract yet.
We don't have a description for PPG-26-Buteth-26 yet.
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 Benzoate is a preservative. It's used in both cosmetic and food products to inhibit the growth of mold and bacteria. It is typically produced synthetically.
Both the US FDA and EU Health Committee have approved the use of sodium benzoate. In the US, levels of 0.1% (of the total product) are allowed.
Sodium benzoate works as a preservative by inhibiting the growth of bacteria inside of cells. It prevents the cell from fermenting a type of sugar using an enzyme called phosphofructokinase.
It is the salt of benzoic acid. Foods containing sodium benzoate include soda, salad dressings, condiments, fruit juices, wines, and snack foods.
Studies for using ascorbic acid and sodium benzoate in cosmetics are lacking, especially in skincare routines with multiple steps.
We always recommend speaking with a professional, such as a dermatologist, if you have any concerns.
Sodium metabisulfite is also known as Sodium Pyrosulfite. It is a preservative, antioxidant, and disinfectant.
As a preservative, it helps stabilize cosmetic formulas without affecting their color or scent.
This extract comes from the flower more commonly known as red clover.
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!
Zinc chloride is a white crystalline compound. You'll most likely see it in personal care products such as mouthwashes, skincare, hair conditioners, and bath products.