Q + A Peptide Serum Versus Medik8 Liquid Peptides
Here's our complete breakdown comparing the ingredients, attributes, and more of Q + A Peptide Serum versus Medik8 Liquid Peptides .
Published on September 18, 2022
Overview
What they are
These products are both cruelty-free and reef safe serums. They have a total of 7 ingredients in common
Cool Features
They both contain AHA, hyaluronic acid and peptides
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin, sensitive skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any harsh alcohols, common allergens, oils, parabens, silicones or sulfates
What's Inside
They both contain fragrances
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that need an update? Let us know.
Ingredient Info
Q + A Peptide Serum 22 ingredients
Medik8 Liquid Peptides 33 ingredients
Alcohol Free
This product is free of harsh alcohols 🎉
Silicon Free
This product is free of silicons 🎉
Contains Fragrance
Ingredients in this product that are forms of fragrance:
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Oil Free
This product is free of oils 🎉
Malassezia Safe
This product is free of malassezia feeding ingredients 🎉
Reef Safe
This product is free of ingredients that damage reefs 🎉
EU Allergen Free
This product is free of EU allergens 🎉
Vegan
This product is vegan 🎉
Cruelty Free
This product is cruelty-free 🎉
Alcohol Free
This product is free of harsh alcohols 🎉
Silicon Free
This product is free of silicons 🎉
Contains Fragrance
Ingredients in this product that are forms of fragrance:
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Oil Free
This product is free of oils 🎉
Not Malassezia Safe
Ingredients in this product that are not malassezia safe:
Reef Safe
This product is free of ingredients that damage reefs 🎉
EU Allergen Free
This product is free of EU allergens 🎉
Non Vegan
This product is not vegan 😥
Cruelty Free
This product is cruelty-free 🎉
At a glance
Click on any of the items below to learn more
Q + A Peptide Serum 22 ingredients
Medik8 Liquid Peptides 33 ingredients
Notable Ingredients
This product contains 1 ingredient that may have this attribute:
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Benefits
This product contains 3 ingredients that may have this attribute:
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This product contains 1 ingredient that may have this attribute:
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This product contains 2 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 3 ingredients that may have this attribute:
Concerns
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
Notable Ingredients
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 9 ingredients that may have this attribute:
Benefits
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 3 ingredients that may have this attribute:
Concerns
This product contains 2 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
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Join SkinSortIngredients Compared
Ingredients that are highlighted in purple are present in both products.
Q + A Peptide Serum 22 ingredients
Medik8 Liquid Peptides 33 ingredients
Water • Propylene Glycol • Betaine • Pentylene Glycol • Xanthan Gum • Aloe Barbadensis Leaf Juice Powder • Sodium Phytate • Glycerin • Lonicera Caprifolium Flower Extract • Biosaccharide Gum-1 • Lonicera Japonica Flower Extract • Sodium Levulinate • Tripeptide-29 • Sodium Hyaluronate • Sodium Ascorbyl Phosphate • Magnesium PCA • Lactic Acid • Glyceryl Caprylate • Cocoyl Proline • Sodium Anisate • Leuconostoc Ferment Filtrate • Citric Acid
Water • Glycerin • Butylene Glycol • Inulin • Sodium Hyaluronate • Panthenol • Alpha-Glucan Oligosaccharide • Carnosine • Carbomer • Polysorbate 20 • Caprylyl Glycol • Phenoxyethanol • Hydroxypropyl Cyclodextrin • Dunaliella Salina Extract • Ethylhexylglycerin • Citric Acid • Palmitoyl Tripeptide-5 • Sodium Benzoate • Acetyl Hexapeptide-8 • Tetrapeptide-21 • Pentapeptide-18 • Palmitoyl Tripeptide-1 • Pantolactone • Palmitoyl Tripeptide-38 • Palmitoyl Tetrapeptide-7 • Glyceryl Caprylate • Lactic Acid • Polyvinyl Alcohol • Phenylpropanol • Copper Palmitoyl Heptapeptide-14 • Heptapeptide-15 Palmitate • Potassium Sorbate • Xanthan Gum
Ingredients Side-by-side
Ingredients that are highlighted in purple are present in both products.
Learn more about what what Com. / Irr. ratings are
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. Talk about multi-purpose! If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterQ + A Peptide Serum contains this as ingredient number 1.
Medik8 Liquid Peptides contains this as ingredient number 1.
Xanthan 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 GumQ + A Peptide Serum contains this as ingredient number 5.
Medik8 Liquid Peptides contains this as ingredient number 33.
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 GlycerinQ + A Peptide Serum contains this as ingredient number 8.
Medik8 Liquid Peptides contains this as ingredient number 2.
Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
Like hyaluronic acid, it is great at holding water and acts as a humectant. This makes it a great skin hydrating ingredient.
Sodium Hyaluronate is naturally occurring in our bodies and is mostly found in eye fluid and joints.
These are some other common types of Hyaluronic Acid:
Learn more about Sodium HyaluronateQ + A Peptide Serum contains this as ingredient number 14.
Medik8 Liquid Peptides contains this as ingredient number 5.
Lactic Acid is an AHA that is derived from fermenting lactose, a carbohydrate from milk. It removes the top layer of old and dead skin cells and helps increase cell turnover.
Benefits of Lactic Acid are that it can help to reduce large pores and reduce the effects of aging. Some potential downsides are that it can be bad for dry skin, cause irritation, worsen eczema, and worsen rosacea.
Not only does it help exfoliate the skin, it helps strengthen the skin's barrier. When applied, lactic acid helps the skin create ceramides.
Lactic acid is an over-the-counter chemical exfoliant that comes from the fermentation of lactose — a carbohydrate found in milk.
Legend has it that Cleopatra used to bathe in sour milk to help reduce wrinkles.
Read more about some other popular AHA's here:
Learn more about Lactic AcidQ + A Peptide Serum contains this as ingredient number 17.
Medik8 Liquid Peptides contains this as ingredient number 27.
Glyceryl Caprylate comes from glycerin and caprylic acid, a fatty acid from coconut.
Glyceryl Caprylate is used for its emollient and emulsifier properties.
As an emollient, it helps hydrate your skin. Emollients work by creating a barrier on your skin to trap moisture in, helping to keep your skin soft and smooth.
Glyceryl Caprylate helps keep the ingredients such as oil and water together as an emulsifier.
Learn more about Glyceryl CaprylateQ + A Peptide Serum contains this as ingredient number 18.
Medik8 Liquid Peptides contains this as ingredient number 26.
Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
If you spot Citric Acid near the end of an ingredient list, it's likely there as a pH adjuster rather than an active ingredient.
As an AHA, Citric Acid removes the top layer of skin cells from the newer layer of skin underneath. This helps skin to remove dark spots and look more even.
Read more about some other popular AHA's here:
Learn more about Citric AcidQ + A Peptide Serum contains this as ingredient number 22.
Medik8 Liquid Peptides contains this as ingredient number 16.
Here's what our community thinks of the ingredients in these two products.
Q + A Peptide Serum 22 ingredients
Medik8 Liquid Peptides 33 ingredients
Usage
Here's some more info on how this product is used by our community.
When to use
Q + A Peptide Serum 22 ingredients
Medik8 Liquid Peptides 33 ingredients
Reviews
Here's what our community thinks
Q + A Peptide Serum 22 ingredients
Medik8 Liquid Peptides 33 ingredients
Julietteanne6464
It’s water based and firms my skin. My skin loves it. I also like Bare Minerals Herb Serum as it has niacinamide and my skin loves that too. Medik8...
It’s water based and firms my skin. My skin loves it. I also like Bare Minerals Herb Serum as it has niacinamide and my skin loves that too. Medik8 Crystal Retinal 3 and 6 also. Elemis pro rad cream wash and dynamic resurf and kefir mist
Alternatives
Our Dupe Finder has found 50 potential alternatives that have similar ingredients to Q + A Peptide Serum.
See 50 alternativesOur Dupe Finder has found 50 potential alternatives that have similar ingredients to Medik8 Liquid Peptides.
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