Skin science article
Peach & Lily Copper Peptide Pro Firming Serum Versus Peach & Lily Super Oasis Concentrated Serum
Peach & Lily Copper Peptide Pro Firming Serum Versus Peach & Lily Super Oasis Concentrated Serum This anti-aging serum is formulated around Copper Tripeptide-1 and Acetyl Hexapeptide-8 to soften the look of wrinkles. This hydrating serum is formulated around P
Peach & Lily Copper Peptide Pro Firming Serum Versus Peach & Lily Super Oasis Concentrated Serum
This anti-aging serum is formulated around Copper Tripeptide-1 and Acetyl Hexapeptide-8 to soften the look of wrinkles.
This hydrating serum is formulated around Panthenol and Polyglutamic Acid to hydrate skin and calm redness.
What's inside
Key Ingredients
Benefits
Ingredients Side-by-side
Water
Dipropylene Glycol
Glycerin
1,2-Hexanediol
Betaine
Copper Tripeptide-1
Acetyl Hexapeptide-8
Palmitoyl Tripeptide-1
Tetrapeptide-21
Tetrapeptide-30
Heptasodium Hexacarboxymethyl Dipeptide-12
Acetyl Tetrapeptide-5
Palmitoyl Tripeptide-38
Palmitoyl Pentapeptide-4
Dipeptide-2
Tripeptide-1
Hexapeptide-9
Nonapeptide-1
Collagen Extract
Serine
Methionine
Cysteine
Arginine
Acmella Oleracea Extract
Alpha-Glucan Oligosaccharide
Sodium PCA
Ulmus Davidiana Root Extract
Cichorium Intybus Root Extract
Helianthus Tuberosus Root Extract
Tremella Fuciformis Extract
Fomes Officinalis Extract
Lentinus Edodes Extract
Pyrus Malus Fruit Extract
Lens Esculenta Fruit Extract
Citrullus Lanatus Fruit Extract
Sodium Acetylated Hyaluronate
Hydrolyzed Hyaluronic Acid
Hyaluronic Acid
Sodium Hyaluronate
Sodium Hyaluronate Crosspolymer
Potassium Hyaluronate
Squalane
Ficus Carica Fruit Extract
Cynanchum Atratum Extract
Hydroxypropyltrimonium Hyaluronate
Ocimum Sanctum Leaf Extract
Melia Azadirachta Leaf Extract
Curcuma Longa Root Extract
Corallina Officinalis Extract
Solanum Melongena Fruit Extract
Coccinia Indica Fruit Extract
Gellan Gum
Butylene Glycol
Adenosine
Aloe Barbadensis Flower Extract
Melia Azadirachta Flower Extract
Polyglyceryl-10 Eicosanedioate/Tetradecanedioate
Polyquaternium-51
Sodium Polyacryloyldimethyl Taurate
Hydroxypropyl Cyclodextrin
Ethylhexylglycerin
Hydroxyethylcellulose
Caprylyl Glycol
Water, Dipropylene Glycol, Glycerin, 1,2-Hexanediol, Betaine, Copper Tripeptide-1, Acetyl Hexapeptide-8, Palmitoyl Tripeptide-1, Tetrapeptide-21, Tetrapeptide-30, Heptasodium Hexacarboxymethyl Dipeptide-12, Acetyl Tetrapeptide-5, Palmitoyl Tripeptide-38, Palmitoyl Pentapeptide-4, Dipeptide-2, Tripeptide-1, Hexapeptide-9, Nonapeptide-1, Collagen Extract, Serine, Methionine, Cysteine, Arginine, Acmella Oleracea Extract, Alpha-Glucan Oligosaccharide, Sodium PCA, Ulmus Davidiana Root Extract, Cichorium Intybus Root Extract, Helianthus Tuberosus Root Extract, Tremella Fuciformis Extract, Fomes Officinalis Extract, Lentinus Edodes Extract, Pyrus Malus Fruit Extract, Lens Esculenta Fruit Extract, Citrullus Lanatus Fruit Extract, Sodium Acetylated Hyaluronate, Hydrolyzed Hyaluronic Acid, Hyaluronic Acid, Sodium Hyaluronate, Sodium Hyaluronate Crosspolymer, Potassium Hyaluronate, Squalane, Ficus Carica Fruit Extract, Cynanchum Atratum Extract, Hydroxypropyltrimonium Hyaluronate, Ocimum Sanctum Leaf Extract, Melia Azadirachta Leaf Extract, Curcuma Longa Root Extract, Corallina Officinalis Extract, Solanum Melongena Fruit Extract, Coccinia Indica Fruit Extract, Gellan Gum, Butylene Glycol, Adenosine, Aloe Barbadensis Flower Extract, Melia Azadirachta Flower Extract, Polyglyceryl-10 Eicosanedioate/Tetradecanedioate, Polyquaternium-51, Sodium Polyacryloyldimethyl Taurate, Hydroxypropyl Cyclodextrin, Ethylhexylglycerin, Hydroxyethylcellulose, Caprylyl Glycol
Glycerin 14.5%
Diethoxyethyl Succinate
Panthenol
Polyglutamic Acid
Panax Ginseng Root Extract
Xylitylglucoside
Anhydroxylitol
Xylitol
Houttuynia Cordata Extract
Beta-Glucan
Hydrolyzed Sodium Hyaluronate
Adansonia Digitata Seed Extract
Sophora Angustifolia Root Extract
Malus Domestica Fruit Extract
Punica Granatum Fruit Extract
Prunus Serotina Fruit Extract
Vaccinium Macrocarpon Fruit Extract
Portulaca Oleracea Extract
Gardenia Florida Fruit Extract
Dextrin
Dipotassium Glycyrrhizate
Glucose
Sodium Polyacrylate
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Pentylene Glycol
Carbomer
Water, Glycerin 14.5%, Diethoxyethyl Succinate, 1,2-Hexanediol, Panthenol, Polyglutamic Acid, Panax Ginseng Root Extract, Sodium PCA, Xylitylglucoside, Anhydroxylitol, Xylitol, Hydrolyzed Hyaluronic Acid, Arginine, Methionine, Cysteine, Sodium Hyaluronate, Hyaluronic Acid, Houttuynia Cordata Extract, Tremella Fuciformis Extract, Sodium Hyaluronate Crosspolymer, Beta-Glucan, Hydrolyzed Sodium Hyaluronate, Adansonia Digitata Seed Extract, Sophora Angustifolia Root Extract, Malus Domestica Fruit Extract, Punica Granatum Fruit Extract, Prunus Serotina Fruit Extract, Vaccinium Macrocarpon Fruit Extract, Butylene Glycol, Portulaca Oleracea Extract, Citrullus Lanatus Fruit Extract, Gardenia Florida Fruit Extract, Dextrin, Dipotassium Glycyrrhizate, Glucose, Sodium Polyacryloyldimethyl Taurate, Sodium Polyacrylate, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Pentylene Glycol, Carbomer, Ethylhexylglycerin, Caprylyl Glycol
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
Arginine is a semi-essential amino acid. This just means our bodies can product a bit on its own, but sometimes needs a little boost from food sources.
It is a part of 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.
Here's an interesting thing about Arginine: your skin converts it into urea through the Krebs-Henseleit urea cycle. Urea is one of the most effective humectants your skin naturally produces.
A clinical study showed applying 2.5% arginine hydrochloride to atopic dermatitis skin showed significant urea levels in the stratum corneum and improved moisture in just four weeks.
Arginine is also a precursor to nitric oxide; nitric oxide improves microcirculation and supports wound healing and collagen synthesis.
One study found that an amino acid complex containing Arginine reduced skin irritation, improved hydration, and accelerated skin repair in clinical / in-vivo studies.
Arginine itself is an amino acid and not a fatty acid, oil, or ester. On its own, it's not a direct food source for Malassezia, or the yeast that causes fungal acne.
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.
Caprylyl Glycol is a humectant, skin conditioner, emollient, and preservative booster derived from either caprylic acid or synthetically created.
Typical use levels vary from 0.3-1% as a preservative booster and go up to 2% to condition skin.
Because it is not a free-fatty acid, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on).
Citrullus Lanatus Fruit Extract comes from the watermelon. Watermelon has antioxidant and anti-inflammatory properties.
Watermelons are rich in antioxidants such as Vitamin A, Vitamin C and lycopene. It also contains sugars and amino acids, such as arginine and glutathione.
Lycopene is a potent antioxidant. Besides helping to protect your skin against free-radical molecules, it also helps soothe the skin. Lycopene gives watermelon the distinct red color.
Cysteine is a sulfur-containing amino acid that your body naturally makes and uses to build keratin (the protein in your hair, skin, and nails) and gluthatione (a major internal antioxidant).
In skincare, it's mostly added as an antioxidant. Some emerging research is also looking at its role in wound healing + evening out pigmentation though most of the pigmentation data comes from oral supplements rather than topical use).
Typical use concentrations for this ingredient are usually quite low (under 5% in leave-on skincare).
Safety data on cysteine specifically shows it's not a skin or eye irritant.
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.
Hyaluronic acid (HA) is a glycosaminoglycan (basically a long sugar chain) that your skin already makes on its own. In your skin, HA lives in the extracellular matrix and acts as the body's moisture reservoir.
Topically, HA is a humectant that binds water and helps skin look more plump, smooth, and hydrated.
The only catch is that HA isn't a single thing; it actually comes in a wide range of molecular weights (~50 - 2,000+ kDA) and size matters.
Some clinical evidence links low molecular weight versions to improved wrinkle depth, elasticity, anti-inflammatory effects, and barrier repair.
This is why the best HA serums blend the two sizes together so you get the best of both worlds.
The majority of cosmetic HA is produced by bacterial fermentation, typically using Streptococcus or Bacillus strains. Typical use levels in skincare sit around 0.1-2%.
A clinical study using a 0.2% low-molecular weight HA gel showed improvement in facial seborrheic dermatitis with excellent tolerance.
These are some other common types of Hyaluronic Acid:
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.
Methionine is a natural amino acid your skin already uses to make proteins and gluthatione (one of the body's key defense molecules against environmental stress like sun + pollution).
Its sulfur content makes it especially reactive with the free radicals that damage skin, giving it genuine antioxidant properties.
Usage percentages are usually under 1%, and usually as part of an amino acid mix designed to mimic what's naturally in skin.
One study used a combination of essential amino acids at 0.2% with supplemental methionine added and found significantly boosted collagen production in human skin.
Cosmetic industry reviewers have looked closely at methionine and other amino acids and found them well tolerated. Methionine is actually used as a "negative control" in lab tests designed to spot irritating ingredients because it doesn't cause a reaction.
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:
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.
Sodium PCA (the salt of PCA) is one of the most well-established humectants in skincare.
Why is it so special? Your skin already makes it naturally; it's a natural component of your skin's Natural Moisturizing Factor (NMF), or the mix of water-binding compounds inside your skin cells that keeps things soft and hydrated.
As a cosmetic ingredient, it grabs water and holds it in the upper layers of skin to smooth roughness and ease dehydration.
There's some clinical support for the NMF approach with a study showing that a cream built to mimic the skin's NMF significantly boosted hydration.
Safety-wise, this ingredient non-irritating, non-comedogenic, and non-phototoxic in testing, with minimal skin absorption.
It also works really well with other hydrators like glycerin or hyaluronic acid, and typical usage is somewhere between 0.2-4%.
This is a lab-made ingredient that plays a huge role in improving the texture of a formula.
It's used to thicken watery gel-creams, prevent water + oil from separating, and give products a silky, non-greasy glide.
Safety-wise, a panel of independent toxicologists reviewed this ingredient and concluded it to be safe in cosmetics in the present practices of use and concentration.
A separate sensitization patch test on humans also showed no evidence of allergic reactivity, and a true allergy to this ingredient is considered rare.
Typical usage levels range from 0.015%-3% in leave-on products and 0.078%-3.2% in rinse-off products.
Tremella Fuciformis Extract comes from the tremella fuciformis mushroom, also known as snow mushroom or white jelly mushroom.
The snow mushroom has moisturizing and antioxidant properties.
Snow mushroom is rich in polysaccharides, giving it moisturizing benefits. As a humectant, snow mushroom helps draw moisture from the air to the skin. Polysaccharides are able to mimic our skin's natural carbohydrates to help the skin retain water.
Snow mushroom has been shown to help with anti-aging due to its antioxidants. It increases the presence of superoxide dismutase in our brain and liver. Superoxide is a by-product of oxygen metabolism. It left unregulated, superoxide causes cell damage. Thus, superoxide dismutase acts as an antioxidant to protect our living cells.
Another study from 2016 showed snow mushroom extract blocks the skin from creating melanin when exposed to UVB. Thus, it may help protect against the signs of aging from sun exposure. However, more studies are needed to confirm this. Another study from 2021 found snow mushroom to protect against UVA damage as well.
This white mushroom is native to Asian countries such as China, Korea, Japan, and Thailand. It is a common ingredient in traditional Chinese cuisine and medicine.
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!