Allies of Skin 20% Vitamin C Brighten + Firm Serum Versus Prequel Lucent-C Brightening Vitamin C Serum
Updated on May 29, 2025
Overview
What they are
These products are both cruelty-free and reef safe serums. They have a total of 5 ingredients in common
Cool Features
They both contain Vitamin C
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, fragrances, oils, parabens or sulfates
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
Allies of Skin 20% Vitamin C Brighten + Firm Serum 24 ingredients
Prequel Lucent-C Brightening Vitamin C Serum 14 ingredients
What's inside
What's inside
At a glance
Click on any of the items below to learn more
Allies of Skin 20% Vitamin C Brighten + Firm Serum 24 ingredients
Prequel Lucent-C Brightening Vitamin C Serum 14 ingredients
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Propanediol
Solvent
Glycerin
Humectant
3-O-Ethyl Ascorbic Acid
Skin Conditioning
Benzimidazole Diamond Amidoethyl Urea Carbamoyl Propyl Polymethylsilsesquioxane
Cosmetic Colorant
Dimethyl Isosorbide
SolventHelianthus Annuus Seed Wax
Skin Conditioning
Polyglyceryl-10 Tristearate
Skin Conditioning
Ethoxydiglycol
HumectantDicaprylyl Ether
Emollient
Water
Skin ConditioningCaprylyl Glycol
EmollientCitrus Aurantium Dulcis Callus Culture Extract
Skin ConditioningGlutathione
Acetyl Cysteine
Antioxidant
Dimethylmethoxy Chromanol
Antioxidant
Ergothioneine
Antioxidant
Tocopherol
Antioxidant
Gluconolactone
Skin Conditioning
Leuconostoc/Radish Root Ferment Filtrate
Antimicrobial
Xanthan Gum
EmulsifyingSilica
Abrasive
Sodium Benzoate
Masking
Calcium Gluconate
HumectantPhenoxyethanol
Preservative
Propanediol, Glycerin, 3-O-Ethyl Ascorbic Acid, Benzimidazole Diamond Amidoethyl Urea Carbamoyl Propyl Polymethylsilsesquioxane, Dimethyl Isosorbide, Helianthus Annuus Seed Wax, Polyglyceryl-10 Tristearate, Ethoxydiglycol, Dicaprylyl Ether, Water, Caprylyl Glycol, Citrus Aurantium Dulcis Callus Culture Extract, Glutathione, Acetyl Cysteine, Dimethylmethoxy Chromanol, Ergothioneine, Tocopherol, Gluconolactone, Leuconostoc/Radish Root Ferment Filtrate, Xanthan Gum, Silica, Sodium Benzoate, Calcium Gluconate, Phenoxyethanol
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
It is a common ingredient in many products, especially those designed to hydrate skin. The primary benefits are retaining moisture, skin softening, and promoting a healthy skin barrier.
Though Caprylyl Glycol is an alcohol derived from fatty acids, it is not the kind that can dry out skin.
This ingredient is also used as a preservative to extend the life of products. It has slight antimicrobial properties.
Learn more about Caprylyl GlycolErgothioneine is an amino acid found naturally in mushrooms, grains, and meat. It has antioxidant and skin soothing properties.
This amino acid helps with:
- Maintaining DNA stability and cell reproduction
- Enhances cellular immunity
- Skin brightening
- Anti-aging
- Skin soothing
Ethoxydiglycol is a synthetic solvent.
Solvents are used to keep ingredients together in a product. They can help dissolve ingredients to stable bases or help evenly distribute ingredients throughout the product.
Ethoxydiglycol also helps deliver other key ingredients into the skin.
Learn more about EthoxydiglycolPropanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.Â
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 PropanediolWater. 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 WaterIngredient Ratings
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When to use
Allies of Skin 20% Vitamin C Brighten + Firm Serum 24 ingredients
Prequel Lucent-C Brightening Vitamin C Serum 14 ingredients
Reviews
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