Anua Green Lemon Vita C Blemish Serum Versus Olay Vitamin C + Peptide 24

Anua Green Lemon Vita C Blemish Serum Versus Olay Vitamin C + Peptide 24

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

This brightening moisturizer is formulated around Niacinamide and 3-O-Ethyl Ascorbic Acid to brighten dull-looking skin and soften the look of wrinkles.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Citrus Limon Fruit Extract

Ascorbic Acid

Propanediol

Butylene Glycol

Dipropylene Glycol

Cyclopentasiloxane

1,2-Hexanediol

Cyclohexasiloxane

Sodium Hydroxide

C12-14 Alketh-12

Bisabolol

Sodium Polyacryloyldimethyl Taurate

Water

Polyacrylate Crosspolymer-6

Dimethicone/Vinyl Dimethicone Crosspolymer

Xanthan Gum

Ethylhexylglycerin

Allantoin

Glycerin

Glutathione

Citrus Aurantium Dulcis Flower Oil

Litsea Cubeba Fruit Oil

Adenosine

Citrus Paradisi Peel Oil

Disodium EDTA

Citrus Aurantium Bergamia Fruit Oil

Mentha Viridis Leaf Oil

Tocopherol

Ferulic Acid

Barosma Betulina Leaf Extract

N-Butyl Alcohol

Hydrogenated Lecithin

Polyglyceryl-10 Stearate

Sorbitol

Panthenol

Beta-Glucan

Sodium Hyaluronate

Sodium Ascorbyl Phosphate

Caprylic/Capric Triglyceride

Helianthus Annuus Seed Oil

Hyaluronic Acid

Sucrose Stearate

Glyceryl Stearates

Beta-Carotene

Sodium Hyaluronate Crosspolymer

Niacinamide

Hydrolyzed Sodium Hyaluronate

Hydrolyzed Hyaluronic Acid

Thioctic Acid

Lycopodium Clavatum Extract

Equisetum Arvense Extract

Sodium Acetylated Hyaluronate

Pyridoxine

Hydroxypropyltrimonium Hyaluronate

Folic Acid

Biotin

Ceramide NP

Ubiquinone

Cyanocobalamin

Thiamine Hcl

Riboflavin

Linoleic Acid

Hesperidin

Ergothioneine

Limonene

Linalool

Citral

Citrus Limon Fruit Extract, Ascorbic Acid, Propanediol, Butylene Glycol, Dipropylene Glycol, Cyclopentasiloxane, 1,2-Hexanediol, Cyclohexasiloxane, Sodium Hydroxide, C12-14 Alketh-12, Bisabolol, Sodium Polyacryloyldimethyl Taurate, Water, Polyacrylate Crosspolymer-6, Dimethicone/Vinyl Dimethicone Crosspolymer, Xanthan Gum, Ethylhexylglycerin, Allantoin, Glycerin, Glutathione, Citrus Aurantium Dulcis Flower Oil, Litsea Cubeba Fruit Oil, Adenosine, Citrus Paradisi Peel Oil, Disodium EDTA, Citrus Aurantium Bergamia Fruit Oil, Mentha Viridis Leaf Oil, Tocopherol, Ferulic Acid, Barosma Betulina Leaf Extract, N-Butyl Alcohol, Hydrogenated Lecithin, Polyglyceryl-10 Stearate, Sorbitol, Panthenol, Beta-Glucan, Sodium Hyaluronate, Sodium Ascorbyl Phosphate, Caprylic/Capric Triglyceride, Helianthus Annuus Seed Oil, Hyaluronic Acid, Sucrose Stearate, Glyceryl Stearates, Beta-Carotene, Sodium Hyaluronate Crosspolymer, Niacinamide, Hydrolyzed Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid, Thioctic Acid, Lycopodium Clavatum Extract, Equisetum Arvense Extract, Sodium Acetylated Hyaluronate, Pyridoxine, Hydroxypropyltrimonium Hyaluronate, Folic Acid, Biotin, Ceramide NP, Ubiquinone, Cyanocobalamin, Thiamine Hcl, Riboflavin, Linoleic Acid, Hesperidin, Ergothioneine, Limonene, Linalool, Citral

Isohexadecane

Dimethicone

Lactic Acid

Isopropyl Isostearate

Stearyl Alcohol

3-O-Ethyl Ascorbic Acid

Palmitoyl Pentapeptide-4

Sodium Lactate

Trehalose

Cetearyl Glucoside

Cetearyl Alcohol

Behenyl Alcohol

Cetyl Alcohol

Stearic Acid

Palmitic Acid

Dimethiconol

PEG-100 Stearate

Sodium Benzoate

Parfum

Avena Sativa Peptide

Water, Glycerin, Isohexadecane, Niacinamide, Dimethicone, Lactic Acid, Isopropyl Isostearate, Sodium Polyacryloyldimethyl Taurate, Stearyl Alcohol, 3-O-Ethyl Ascorbic Acid, Palmitoyl Pentapeptide-4, Panthenol, Sodium Lactate, Trehalose, Cetearyl Glucoside, Cetearyl Alcohol, Behenyl Alcohol, Cetyl Alcohol, Stearic Acid, Palmitic Acid, Dimethiconol, PEG-100 Stearate, Sodium Benzoate, Parfum, Ascorbic Acid, Avena Sativa Peptide

Reviews

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.

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.

Panthenol is a common ingredient that helps hydrate and soothe the skin. It is found naturally in our skin and hair.

There are two forms of panthenol: D and L.

D-panthenol is also known as dexpanthenol. Most cosmetics use dexpanthenol or a mixture of D and L-panthenol.

Panthenol is famous due to its ability to go deeper into the skin's layers. Using this ingredient has numerous pros (and no cons):

Like hyaluronic acid, panthenol is a humectant. Humectants are able to bind and hold large amounts of water to keep skin hydrated.

This ingredient works well for wound healing. It works by increasing tissue in the wound and helps close open wounds.

Once oxidized, panthenol converts to pantothenic acid. Panthothenic acid is found in all living cells.

This ingredient is also referred to as pro-vitamin B5.

This is a lab-made ingredient that plays a huge role in improving the texture of a formula.

It's used to thicken watery gel-creams, prevent water + oil from separating, and give products a silky, non-greasy glide.

Safety-wise, a panel of independent toxicologists reviewed this ingredient and concluded it to be safe in cosmetics in the present practices of use and concentration.

A separate sensitization patch test on humans also showed no evidence of allergic reactivity, and a true allergy to this ingredient is considered rare.

Typical usage levels range from 0.015%-3% in leave-on products and 0.078%-3.2% in rinse-off 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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