Versus

Dr. Dennis Gross Skincare Vitamin C Lactic Oil-Free Radiant Moisturizer Versus Prequel Lucent-C Brightening Vitamin C Serum

General Moisturizer
Serum
American Brand United States
American Brand United States

Updated on December 18, 2023

Overview

What they are

These products are both cruelty-free and reef safe . They have a total of 5 ingredients in common

Cool Features

They both contain niacinamide and Vitamin C

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 harsh alcohols, oils, parabens, silicones 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

Click any item below to learn more and see relevant ingredients

What's inside (and what isn't)

What's inside (and what isn't)

At a glance

Click on any of the items below to learn more

Key Ingredients

Benefits

Concerns

Key Ingredients

Benefits

Ingredients Side-by-side

found in both products
Vitamin C Lactic Oil-Free Radiant Moisturizer

Water

Skin Conditioning

Squalane

Emollient
1 / 0 Helps hydrate Dry Skin Icon

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin IconGood for Scar Healing IconHelps brighten skin Icon

3-O-Ethyl Ascorbic Acid

Skin Conditioning
Vitamin C IconHelps reduce Skin Redness IconGood for Skin Texture IconGood for Minimizing Pores Icon

Tetrahexyldecyl Ascorbate

Antioxidant
Vitamin C IconAntioxidant IconHelps reduce Skin Redness IconGood for Skin Texture IconGood for Minimizing Pores IconHelps brighten skin Icon

Ascorbic Acid

Antioxidant
Vitamin C IconAntioxidant IconHelps reduce Skin Redness IconGood for Skin Texture IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Dark Spots IconGood for Scar Healing IconHelps brighten skin Icon

Lactic Acid

Buffering
AHA IconGood for Oily Skin IconGood for Skin Texture IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Dark Spots IconGood for Scar Healing IconHelps brighten skin IconMay worsen Eczema IconMay worsen Rosacea Icon

Silybum Marianum Fruit Extract

Skin Conditioning

Niacinamide

Smoothing
Niacinamide IconGood for Oily Skin IconHelps reduce Skin Redness IconHelps reduce irritation IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Dark Spots IconGood for Scar Healing IconHelps fight Acne IconHelps brighten skin Icon

Centella Asiatica Extract

Cleansing
Helps reduce Skin Redness IconHelps reduce irritation IconHelps with Anti-Aging Icon

Ceramide Ng

Skin Conditioning
Ceramide IconHelps hydrate Dry Skin IconHelps reduce irritation IconHelps with Anti-Aging Icon

Superoxide Dismutase

Antioxidant
Antioxidant IconHelps with Anti-Aging Icon

Quercetin

Antioxidant
Antioxidant Icon

Phospholipids

Skin Conditioning
Helps hydrate Dry Skin Icon

Sodium Hyaluronate

Humectant
0 / 0 Hyaluronic Acid IconHelps hydrate Dry Skin Icon

Hydrolyzed Sodium Hyaluronate

Skin Conditioning
Helps hydrate Dry Skin IconHelps reduce irritation IconGood for Scar Healing Icon

Sodium Carboxymethyl Beta-Glucan

Cleansing

Inonotus Obliquus Extract

Skin Conditioning

Saccharide Isomerate

Humectant
Helps hydrate Dry Skin Icon

Ferulic Acid

Antimicrobial
Antioxidant IconHelps with Anti-Aging IconGood for Dark Spots Icon

Ubiquinone

Antioxidant
Antioxidant IconHelps with Anti-Aging IconGood for Dark Spots Icon

Soy Isoflavones

Skin Conditioning

Aloe Barbadensis Leaf Juice

Skin Conditioning
Helps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation Icon

Phytosphingosine

Skin Conditioning
Helps hydrate Dry Skin IconHelps reduce irritation Icon

Leuconostoc/Radish Root Ferment Filtrate

Antimicrobial
Not safe for Fungal Acne Icon

Methyl Gluceth-20

Humectant
Helps hydrate Dry Skin Icon

Propylene Glycol

Humectant
0 / 0 Helps hydrate Dry Skin IconMay worsen Eczema IconMay worsen Rosacea Icon

Sodium PCA

Humectant
0 / 0 Helps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation Icon

Myristyl Myristate

Emollient
0-5 / 2 May worsen Oily Skin IconBad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Polyglyceryl-10 Laurate

Skin Conditioning
Not safe for Fungal Acne Icon

Pentylene Glycol

Skin Conditioning

Caprylyl Glycol

Emollient

Adenosine

Skin Conditioning
Helps hydrate Dry Skin IconHelps reduce irritation IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Scar Healing Icon

Carbomer

Emulsion Stabilising
1 / 0

Cetearyl Olivate

Not safe for Fungal Acne Icon

Polyacrylate Crosspolymer-6

Emulsion Stabilising

Lauryl Laurate

Skin Conditioning
Not safe for Fungal Acne Icon

Sodium Hydroxide

Buffering

Potassium Hydroxide

Buffering

Sodium Glycolate

Buffering

C13-15 Alkane

Solvent

Sorbitan Olivate

Emulsifying
Not safe for Fungal Acne Icon

Phytic Acid

AHA IconGood for Oily Skin IconGood for Skin Texture IconGood for Minimizing Pores IconHelps with Anti-Aging IconHelps brighten skin IconMay worsen Rosacea Icon

Citric Acid

Buffering
AHA IconGood for Oily Skin IconGood for Skin Texture IconGood for Minimizing Pores IconGood for Scar Healing IconHelps brighten skin IconMay worsen Rosacea Icon

Sodium Citrate

Buffering

Tetrasodium Glutamate Diacetate

Pentasodium Pentetate

Camellia Sinensis Leaf Extract

Antimicrobial
Antioxidant IconHelps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation IconGood for Minimizing Pores IconHelps with Anti-Aging Icon

Cucumis Sativus Fruit Extract

Emollient
Helps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation Icon

Triethyl Citrate

Masking
Fragrance Icon

Lavandula Angustifolia Flower/Leaf/Stem Extract

Masking
Fragrance IconMay cause irritation Icon

Elettaria Cardamomum Seed Extract

Perfuming
Fragrance Icon

Pyrus Malus Fruit Extract

Skin Conditioning
Helps hydrate Dry Skin Icon

Rubus Idaeus Fruit Extract

Astringent

Cananga Odorata Flower Extract

Perfuming
Fragrance IconMay cause irritation IconEU Allergen Icon

Citrus Aurantium Bergamia Fruit Extract

Skin Conditioning

Citrus Aurantium Amara Flower Extract

Refreshing

Coffea Arabica Seed Extract

Masking
Helps hydrate Dry Skin IconHelps reduce irritation IconHelps with Anti-Aging Icon

Cucumis Melo Fruit Extract

Skin Conditioning

Cupressus Sempervirens Leaf/Stem Extract

Skin Conditioning

Fucus Vesiculosus Extract

Emollient
Helps hydrate Dry Skin Icon

Jasminum Officinale Flower Extract

Masking
Fragrance IconMay cause irritation IconEU Allergen Icon

Rose Extract

Skin Conditioning

Rosmarinus Officinalis Leaf Extract

Antimicrobial

Salvia Officinalis Leaf Extract

Cleansing

Santalum Album Wood Extract

Perfuming
Fragrance Icon

Phenoxyethanol

Preservative
Preservative Icon

Sorbic Acid

Preservative
Preservative Icon

Potassium Sorbate

Preservative
Preservative Icon

Water, Squalane, Glycerin, 3-O-Ethyl Ascorbic Acid, Tetrahexyldecyl Ascorbate, Ascorbic Acid, Lactic Acid, Silybum Marianum Fruit Extract, Niacinamide, Centella Asiatica Extract, Ceramide Ng, Superoxide Dismutase, Quercetin, Phospholipids, Sodium Hyaluronate, Hydrolyzed Sodium Hyaluronate, Sodium Carboxymethyl Beta-Glucan, Inonotus Obliquus Extract, Saccharide Isomerate, Ferulic Acid, Ubiquinone, Soy Isoflavones, Aloe Barbadensis Leaf Juice, Phytosphingosine, Leuconostoc/Radish Root Ferment Filtrate, Methyl Gluceth-20, Propylene Glycol, Sodium PCA, Myristyl Myristate, Butylene Glycol, Polyglyceryl-10 Laurate, Pentylene Glycol, Caprylyl Glycol, Adenosine, Carbomer, Cetearyl Olivate, Polyacrylate Crosspolymer-6, Lauryl Laurate, Sodium Hydroxide, Potassium Hydroxide, Sodium Glycolate, C13-15 Alkane, Sorbitan Olivate, Phytic Acid, Citric Acid, Sodium Citrate, Tetrasodium Glutamate Diacetate, Pentasodium Pentetate, Camellia Sinensis Leaf Extract, Cucumis Sativus Fruit Extract, Triethyl Citrate, Lavandula Angustifolia Flower/Leaf/Stem Extract, Elettaria Cardamomum Seed Extract, Pyrus Malus Fruit Extract, Rubus Idaeus Fruit Extract, Cananga Odorata Flower Extract, Citrus Aurantium Bergamia Fruit Extract, Citrus Aurantium Amara Flower Extract, Coffea Arabica Seed Extract, Cucumis Melo Fruit Extract, Cupressus Sempervirens Leaf/Stem Extract, Fucus Vesiculosus Extract, Jasminum Officinale Flower Extract, Rose Extract, Rosmarinus Officinalis Leaf Extract, Salvia Officinalis Leaf Extract, Santalum Album Wood Extract, Phenoxyethanol, Sorbic Acid, Potassium Sorbate

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Skin Conditioning, Solvent

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 Water
Antioxidant, Buffering, Masking

Ascorbic Acid is is pure Vitamin C. This form makes up the largest amount of vitamin C found naturally in our skin.

Not only is vitamin C great for your overall health and immune system, it also has plenty of benefits on your skin.

Vitamin C is best used for brightening skin. It improves dark spots, acne scars, and hyperpigmentation. This is because it blocks the process of skin darkening when exposed to UV.

Remember: Vitamin C should not replace sunscreen!

Your skin uses vitamin C to build collagen. Collagen is one key component in having a strong skin barrier and plump skin. Vitamin C also plays a role in regulating collagen, thus making it effective in improving wrinkles and fine lines.

Ascorbic acid shows potent antioxidant activity. As an antioxidant, it helps fight free-radicals. Free-radicals are molecules that may damage your skin cells. These antioxidants also protect skin against UV damage.

The best formulations include Vitamin E and/or ferulic acid. These two ingredients help stabilize and provide a boost in the benefits of ascorbic acid. This is because ascorbic acid becomes unstable when exposed to UV and air. In fact, you can tell your ascorbic acid has oxidized when it turns an orange-yellow color.

Ascorbic acid is generally compatible with other ingredients. However, using ascorbic acid with other active ingredients might cause irritation. Two ingredients: copper ions and benzoyl peroxide, will inactivate ascorbic acid completely.

Read more about other types of Vitamin C:

Foods rich with vitamin C include oranges, strawberries, broccoli, bell peppers, and more. When consuming Vitamin C, your skin receives a portion of the nutrients.

Learn more about Ascorbic Acid
Smoothing

Niacinamide is a multitasking form of vitamin B3 that strengthens the skin barrier, reduces pores and dark spots, regulates oil, and improves signs of aging.

And the best part? It's gentle and well-tolerated by most skin types, including sensitive and reactive skin.

You might have heard of "niacin flush", or the reddening of skin that causes itchiness. Niacinamide has not been found to cause this.

In very rare cases, some individuals may not be able to tolerate niacinamide at all or experience an allergic reaction to it.

If you are experiencing flaking, irritation, and dryness with this ingredient, be sure to double check all your products as this ingredient can be found in all categories of skincare.

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.

When you apply niacinamide to your skin, your body converts it into nicotinamide adenine dinucleotide (NAD). NAD is an essential coenzyme that is already found in your cells as "fuel" and powers countless biological processes.

In your skin, NAD helps repair cell damage, produce new healthy cells, support collagen production, strengthen the skin barrier, and fight environmental stressors (like UV and pollution).

Our natural NAD levels start to decline with age, leading to slower skin repair, visible aging, and a weaker skin barrier. By providing your skin niacinamide, you're recharging your skin's NAD levels. This leads to stronger, healthier, and younger looking skin.

Another name for vitamin B3 is nicotinamide. This vitamin is water-soluble and our bodies don't store it. We obtain Vitamin B3 from either food or skincare. Meat, fish, wheat, yeast, and leafy greens contain vitamin B3.

The type of niacinamide used in skincare is synthetically created.

Learn more about Niacinamide
Antimicrobial, Antioxidant

Ferulic Acid is a plant based antioxidant. By fighting free-radicals, ferulic acid can help reduce the formation of fine lines and hyperpigmentation.

When used with Vitamin C, Ferulic Acid has shown to prevent Vitamin C from breaking down. In other words, it acts as a stabilizer.

Ferulic Acid is sometimes used to preserve food. Foods containing Ferulic Acid include: oats, rice, eggplant, citrus.

In medicine, Ferulic Acid is being studied for helping with diabetes, Alzheimer's, and cardiovascular diseases.

Learn more about Ferulic Acid
Emollient, Humectant, Skin Conditioning

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 Glycol

When to use

5 Routines
80% use in am
20% use in pm
100% use every day
243 Routines
91% use in am
9% use in pm
89% use every day
When to use See routines that use it ->

Reviews

Here's what our community thinks

Dr. Dennis Gross Skincare Vitamin C Lactic Oil-Free Radiant Moisturizer 70 ingredients

Vitamin C Lactic Oil-Free Radiant Moisturizer hasn't been rated yet.
Rate it now

Prequel Lucent-C Brightening Vitamin C Serum 14 ingredients

3.4 /5
from 9 ratings
Great Value (6) Absorbs Well (5) Strong Scent (5)
brookefowler's avatar

Brooke Fowler

6 months ago
Review

When I first got into skincare years ago, I tried the extremely expensive ce ferulic everyone knows and, though I loved it and it made a big difference in my skin, I couldn’t justify the price for what ended up being half a bottle before it oxidized. All other vitamin c just irritated my skin so I gave up on it. I had a reoccurrence of my acne recently and remembered that this product had been a Show more

#great value
#light
#absorbs well
#strong scent
ClaireEstelle's avatar

Claire L.

7 months ago
Review

I really like this Vitamin C serum and have noticed an improvement in some of my dark spots. The serum is packaged in opaque glass to protect it from UV. I don't like the pump very much as the formula is very liquid and it shoots out fast - something to be aware of. It also has to go on first (before other serums) as things can pill on top of it. However, for the price and effectiveness, I'm Show more

#great value
#absorbs well
#light scent