KORA Organics Noni Bright 12% Vitamin C Serum Versus Paula's Choice C15 Super Booster

KORA Organics Noni Bright 12% Vitamin C Serum Versus Paula's Choice C15 Super Booster

This brightening serum is formulated around Aloe Barbadensis Leaf Juice and Ascorbyl Glucoside to brighten dull-looking skin and fade the look of dark spots.

This brightening serum is formulated around Ascorbic Acid and Ferulic Acid to brighten dull-looking skin and soften the look of wrinkles.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Aloe Barbadensis Leaf Juice

Ascorbyl Glucoside

Glycerin

Water

Lactobacillus Ferment

Lactobacillus/Acerola Cherry Ferment

Potassium Hydroxide

Dicaprylyl Carbonate

Capsicum Annuum Fruit Extract

Lactobacillus

Citrus Limon Peel Extract

Cocos Nucifera Fruit Extract

Terminalia Ferdinandiana Fruit Extract

Morinda Citrifolia Fruit Extract

Hydrolyzed Sodium Hyaluronate

Olea Europaea Leaf Extract

Zinc PCA

Lysolecithin

Sclerotium Gum

Xanthan Gum

Pullulan

Caprylic/Capric Triglyceride

Ascorbic Acid

Leuconostoc/Radish Root Ferment Filtrate

Salvia Sclarea Extract

Citrus Aurantium Dulcis Peel Extract

Potassium Sorbate

Sodium Phytate

Sodium Benzoate

Citric Acid

Sodium Salicylate

Euterpe Oleracea Juice

Tocopherol

Silica

Maltodextrin

Alcohol

Glycine Soja Oil

Quartz

Citral

Limonene

Linalool

Aloe Barbadensis Leaf Juice, Ascorbyl Glucoside, Glycerin, Water, Lactobacillus Ferment, Lactobacillus/Acerola Cherry Ferment, Potassium Hydroxide, Dicaprylyl Carbonate, Capsicum Annuum Fruit Extract, Lactobacillus, Citrus Limon Peel Extract, Cocos Nucifera Fruit Extract, Terminalia Ferdinandiana Fruit Extract, Morinda Citrifolia Fruit Extract, Hydrolyzed Sodium Hyaluronate, Olea Europaea Leaf Extract, Zinc PCA, Lysolecithin, Sclerotium Gum, Xanthan Gum, Pullulan, Caprylic/Capric Triglyceride, Ascorbic Acid, Leuconostoc/Radish Root Ferment Filtrate, Salvia Sclarea Extract, Citrus Aurantium Dulcis Peel Extract, Potassium Sorbate, Sodium Phytate, Sodium Benzoate, Citric Acid, Sodium Salicylate, Euterpe Oleracea Juice, Tocopherol, Silica, Maltodextrin, Alcohol, Glycine Soja Oil, Quartz, Citral, Limonene, Linalool

Dipropylene Glycol

Propanediol

Ethoxydiglycol

Sodium Hydroxide

PPG-26-Buteth-26

PEG-40 Hydrogenated Castor Oil

Bisabolol

Ferulic Acid

Decylene Glycol

1,2-Hexanediol

Sphingomonas Ferment Extract

Phenoxyethanol

Water, Ascorbic Acid, Dipropylene Glycol, Propanediol, Glycerin, Ethoxydiglycol, Sodium Hydroxide, PPG-26-Buteth-26, PEG-40 Hydrogenated Castor Oil, Bisabolol, Ferulic Acid, Sodium Phytate, Decylene Glycol, Tocopherol, 1,2-Hexanediol, Sphingomonas Ferment Extract, Phenoxyethanol

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Alternatives

Ingredients Explained

These ingredients are found in both products.

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

Ascorbic Acid is is pure Vitamin C and is the biologically active form used directly by skin.

Not only is vitamin C great for your overall health and immune system, but it also has plenty of benefits for your skin. It is best supported by academic literature for:

Topical vitamin C has been shown to help neutralize oxidative stress from UV and pollution, helping to improve photoaging and hyperpigmentation when used consistently.

One clinical study found that using 5% topical vitamin C for six months improved signs of photodamaged skin, both on the surface and in the deeper structural layers of the skin.

While vitamin C doesn’t replace sunscreen, studies show it can boost photoprotection when combined with Vitamin E and ferulic acid. These two ingredients help improve stability and protective effects.

The big downside of this ingredient is formulation difficulty. Vitamin C is prone to oxidation and doesn't penetrate the skin unless formulated correctly. Research found that vitamin C absorbs into the skin best at a low pH (< 3.5) with about 20% being the upper limit for effective absorption.

Skin levels can saturate after repeated application; this means your skin won’t keep absorbing more once it’s full of vitamin C. This is why more isn’t always better with vitamin C and why very high concentrations don’t necessarily give extra benefits.

Ascorbic acid generally works well with many skincare ingredients but can be irritating when combined with other active ingredients. Strong oxidizing acne treatments like benzoyl peroxide can reduce the effectiveness of vitamin C if they are used at the same time; they are often recommended for use at different times of day.

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.

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.

Sodium Phytate is the synthetic salt form of phytic acid. Phytic acid is an antioxidant and can be found in plant seeds.

Sodium Phytate is a chelating agent. Chelating agents help prevent metals from binding to water. This helps stabilize the ingredients and the product.

Tocopherol is a fat-soluble antioxidant known as Vitamin E.

You'll find this ingredient in the vast majority of skincare (for good reason). It works to neutralize free radicals, or unstable molecules generated by UV exposure, pollution, and other environmental stressors, before they can cause oxidative damage to your skin cells.

Topically applied tocopherol has been shown to protect against UV damage by ramping up the skin's own natural defense enzymes.

It also acts as a skin conditioning agent; some studies show that regular topical use can improve the skin's water-binding capacity over 2-4 weeks.

This ingredient is especially loved for being a team player. When combined with Vitamin C, the photoprotective effect of both ingredients roughly doubles and the combo also helps reduce UV-induced DNA damage.

This ingredient has some brightening potential but it's more of a prevention ingredient than spot-fader. Cell studies show it can slow down melanin production but it's worth noting that it's not the most powerful brightener out there.

In formulations, it also serves as a stabilizer that helps protect other oxidation-prone ingredients from degrading.

Concentrations usually range from 0.1-1% in most leave-on products.

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!

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