SkinCeuticals P-Tiox Wrinkle Modulating Peptide Serum Versus PCA Skin Rejuvenating Serum
Updated on August 21, 2024
Overview
What they are
These products are both reef safe serums. They have a total of 6 ingredients in common
Cool Features
They both contain niacinamide, peptides and PHA
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any parabens, silicones or sulfates
What's Inside
They both contain harsh alcohols
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
SkinCeuticals P-Tiox Wrinkle Modulating Peptide Serum 19 ingredients
PCA Skin Rejuvenating Serum 36 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
SkinCeuticals P-Tiox Wrinkle Modulating Peptide Serum 19 ingredients
PCA Skin Rejuvenating Serum 36 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningNiacinamide
Smoothing
Gluconolactone
Skin Conditioning
Butylene Glycol
Humectant
PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin
HumectantAlcohol Denat.
Antimicrobial
Pentylene Glycol
Skin ConditioningMethyl Gluceth-20
HumectantGlycerin
Humectant
Potassium Hydroxide
BufferingHydroxyethylcellulose
Emulsion StabilisingSalicylic Acid
Masking
Chlorphenesin
Antimicrobial
Phytic Acid
Adenosine
Skin Conditioning
Sodium Benzoate
Masking
Laminaria Digitata Extract
Skin ProtectingDipeptide Diaminobutyroyl Benzylamide Diacetate
Skin Conditioning
Acetyl Hexapeptide-8
Humectant
Water, Niacinamide, Gluconolactone, Butylene Glycol, PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin, Alcohol Denat., Pentylene Glycol, Methyl Gluceth-20, Glycerin, Potassium Hydroxide, Hydroxyethylcellulose, Salicylic Acid, Chlorphenesin, Phytic Acid, Adenosine, Sodium Benzoate, Laminaria Digitata Extract, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Acetyl Hexapeptide-8
Water
Skin ConditioningAlcohol Denat.
Antimicrobial
Glycerin
Humectant
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingAminomethyl Propanol
BufferingGluconolactone
Skin Conditioning
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion StabilisingPolysorbate 20
Emulsifying
Bisabolol
Masking
Isomalt
HumectantSodium Benzoate
Masking
Sodium Lactate
BufferingSodium PCA
HumectantCaprylyl Glycol
Emollient1,2-Hexanediol
Skin ConditioningMentha Piperita Oil
Masking
Tocopherol
Antioxidant
Citrus Paradisi Peel Oil
Masking
Glutathione
Squalane
Emollient
Oryza Sativa Bran Oil
Emollient
Citrus Aurantium Dulcis Peel Oil
Masking
Phospholipids
Skin ConditioningTropolone
Skin ConditioningTocotrienols
Skin ConditioningCamellia Sinensis Leaf Extract
Antimicrobial
Epigallocatechin Gallate
Antioxidant
Aloe Barbadensis Leaf Juice Powder
Skin ConditioningFructose
HumectantGlycine
Buffering
Niacinamide
Smoothing
Urea
Buffering
Inositol
HumectantLecithin
EmollientVitis Vinifera Fruit Cell Extract
Skin ConditioningSh-Oligopeptide-1
Skin Conditioning
Water, Alcohol Denat., Glycerin, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Aminomethyl Propanol, Gluconolactone, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Polysorbate 20, Bisabolol, Isomalt, Sodium Benzoate, Sodium Lactate, Sodium PCA, Caprylyl Glycol, 1,2-Hexanediol, Mentha Piperita Oil, Tocopherol, Citrus Paradisi Peel Oil, Glutathione, Squalane, Oryza Sativa Bran Oil, Citrus Aurantium Dulcis Peel Oil, Phospholipids, Tropolone, Tocotrienols, Camellia Sinensis Leaf Extract, Epigallocatechin Gallate, Aloe Barbadensis Leaf Juice Powder, Fructose, Glycine, Niacinamide, Urea, Inositol, Lecithin, Vitis Vinifera Fruit Cell Extract, Sh-Oligopeptide-1
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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. Stay hydrated!
Learn more about WaterNiacinamide has emerged as an all-star ingredient due to its many benefits.
It is known to treat acne by reducing inflammation. It also helps fade dark-spots and strengthen the skin by promoting the growth of the ceramide barrier.
Other benefits include smoothing wrinkles and minimizing redness.
The cherry on top? Niacinamide can also help build keratin, a protein that keeps skin firm.
When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.
Niacinamide can be mixed with other ingredients to boost benefits. For instance, it has shown to be effective when used with copper, folic acid, and zinc to treat acne.
Learn more about NiacinamideGluconolactone is a PHA. PHAs are a great gentle alternative to traditional AHAs.
When applied, Gluconolactone has the same affect on skin as AHAs such as lactic acid. It helps dissolve the dead skin cells in the top layer of your skin. This improves texture and brightens the skin.
PHAs are more gentle than AHAs due to their larger structure. They do not penetrate as deeply as AHAs and take a longer time to dissolve dead cells. Studies show PHAs do not cause as much irritation.
Gluconolactone has some interesting properties:
In a 2004 study, Gluconolactone was found to prevent UV damage in mouse skin cells and has not been found to increase sun sensitivity. However, we still recommend wearing SPF daily.
This ingredient is is an created by reacting gluconic acid with an alcohol.
Learn more about GluconolactoneAlcohol Denat. is an alcohol with a denaturant property. It is created by mixing ethanol with other additives.
This ingredient gets a bad rep because it is irritating and drying - mostly due to its astringent property. Astringents draw out natural oils in tissue, constricting pores and leaving your skin dried out.
However, alcohol denat. is not all that bad.
Due to its low molecular weight, alcohol denat. tends to evaporate quickly. One study on pig skin found half of applied alcohol evaporated in 10 seconds and less than 3% stayed on skin.
This also helps other ingredients become better absorbed upon application.
Studies are conflicted about whether this ingredient causes skin dehydration. One study from 2005 found adding emollients to propanol-based sanitizer decreased skin dryness and irritation. Another study found irritation only occurs if your skin is already damaged.
Small amounts of alcohol are generally tolerated by oily skin or people who live in humid environments.
The rule of thumb is if this alcohol is near the end of an ingredients list, it will probably not affect your skin much.
Also...
This ingredient has antimicrobial and solvent properties.
The antimicrobial property helps preserve products and increase their shelf life. As a solvent, it helps dissolve other ingredients.
Other types of astringent alcohols include:
Learn more about Alcohol Denat.Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.
As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.
Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.
Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.
In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.
This ingredient is organic, colorless, odorless, and non-toxic.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about GlycerinSodium 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.
Learn more about Sodium BenzoateIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
SkinCeuticals P-Tiox Wrinkle Modulating Peptide Serum 19 ingredients
PCA Skin Rejuvenating Serum 36 ingredients
Reviews
Here's what our community thinks
SkinCeuticals P-Tiox Wrinkle Modulating Peptide Serum 19 ingredients
I may have had unrealistic expectations for this serum, but I didn't really notice any benefit to using it. I used it consistently and finished the bottle. Though it felt nice on my skin and seemed hydrating, it did not reduce the appearance of fine lines.
I’m liking this so far, feels like it’s doing something.
