Review of: C.E.O. 15% Vit. C Brightening Serum

Reviewed by: Wendy H Robbins

Summary: Looking for a honest review? This is a comprehensive reviews of C.E.O. 15% Vitamin C serum, let’s see what the real users are saying concerning this vitamin c serum with 15% Tetrahexyldecyl ascorbate, a stable and oil-soluble form of vitamin C that enhanced visible brightening, skin tone, protect and  repair damage skins.

Product Name:  C.E.O. 15% Vit. C Brightening Serum Review

Overall Rating:

Size:  1 oz.

Price:  $85.00

Cost Per Ounce:  $85:00

Product Type:  Vitamin c serum for the face

Where To Buy:

Number of Ingredients:  39

Key Ingredients:  Collagen Amino Acids, Lactic Acid, Citrus aurantium dulcis sweet Acid, Alpha Hydroxy Acid, Turmeric Root Extract, glycolic acid, saccharide isomerate extract, aurantium dulcis sweet orange, Jojoba esters.

Overall Opinion:

The Sunday riley C E O 15 percent Vitamin C Brightening Serum is an oil Soluble derivative that helps with dark spots, skin tone, fine lines, and wrinkle. It contains 15% THD Ascorbate, being an oil soluble derivative, means it’s not pure ascorbic acid, and doesn’t deteriorate quickly. So, it lasts for a longer period of time.

How does Sunday Riley CEO use vitamin C?

The percentage of vitamin C in this vitamin c serum is 15%, some see great results in brightness, reduction in hyperpigmentation, while some don’t see such result with the 15%, it all depend on your type of skin, if 15% of Vitamin C is going to work for you.

When you see a serum where vitamin C is above 10%, it is usually regarded as high percentage, Let me give you a little breakdown of Vit. C, and how much effect it could have on you:

• It’s possible to use as low as 0.5% of Vitamin C serums and get a great result

• People with sensitive skin get great results with less than 5%.

• For brightening of dull skin is recommended you go for vitamin C serums above 10%-15%

• For layering is recommended you go vitamin C serums above 15%-20%

• If you’re aiming to remove dark spots is recommended to go for vitamin C serums with 20% and above.

From this little breakdown you could see the percentage of Vitamin C would be okay for you, those with sensitive skin shouldn’t go above 5%, because it can cause irritations though phytosterols is among the active ingredient that will help to decrease the any signs of s sensitivity.

Another point that’s worth mentioning, is that, the antioxidant formula will instantly illuminate your complexion with a bright radiance, and it has a  pH of 3.3 which means it’s not as acidic as other L-ascorbic acid serums available on the market, thereby making it less irritating compare to other vitamin C serum that’s in review on our site.

CEO 15 percent Vitamin C Brightening Serum is made from a potent form of Vit. C called THD Ascorbate, that’s highly stable and lipid-soluble, it’s an antioxidant that quickly absorbs for visible anti-aging benefits and it’s helpful in fighting dullness , dark spots, fine line and wrinkles

Detailed Opinion:

What are the Key Benefits?

The key benefit of this best serum for face is that, it contains an active  ingredient called  tetrahexyldecyl ascorbate, a stable  form of vitamin C, with a high concentration of 15%. Most clinical research has shown it’s more effective than L-ascorbic acid, without the issues of oxidation and irritation.

Other key benefits include:

  • · A Stable form of Vitamin C that won’t oxidize too quickly
  • · It delivers clarity and brightens and moisturize a dull skin
  • The addition of AHA gently exfoliates your skin
  • No irritation
  • Excellent on dark spots
  • It eliminates fine lines and wrinkles
  • It hydrates and nourish the skin
  • Great in curing acne

What it is?

A vitamin C brightening serum that contains 15% Tetrahexyldecyl Ascorbate, THD Ascorbate is a more stable, lipid soluble form of Vitamin C. A face serum that fight, dullness and discoloration, while eliminating the signs of aging.

What is THD Ascorbate?

THD Ascorbate is a more stable, oil-soluble form of Vitamin C than L-ascorbic acid with less problem of irritation and oxidation

What it does:

THD ascorbate, one of the key ingredient is a potent form of vitamin C rapidly absorbs and tackle visible signs of aging, dark spot, fine lines and wrinkles, and make your skin appear firmer, more radiant, and even tone with continuous use.

Which vitamin C serum is best?

Like I said earlier your skin sensitivity let you know the amount of vit.C you need, your type of skin will determine the percentage of the vitamin c serum that would work for you.

Type of skin:

People with high skin sensitivity should take caution when using this product, 15% of vitamin C can easily get you irritated, apart from that, all other types who wants a stable form of Vit. C in a high percentage can use the product for brightening and glowing purpose.

Skincare Concerns:

This vit. C serum takes care of dullness, and Loss of Firmness and Elasticity, dark spots, fine lines and wrinkles, dehydration, uneven texture above all for a brightening, luminous, plump and radiance skin.


This product is a Lightweight, creamy texture that absorbs rapidly without any residue on the surface of your skin. It actually makes you feel comfortable after applying it, and suit most people.


How do you use CEO brightening serum?

It’s recommended to apply it twice a day and It’s quite easy to apply, just like you do with the other serums, after cleansing, you pumps to clean skin 1 to 2 drops and spread it down the neck, and low neckline, then give it some seconds to absorb before applying any moisturizer of choice.

If you can use it twice a day, make sure to use it at bedtime, the reason for using it in the evening is to get the full benefit of the brightening effect of vit. C, while you sleep. If you do, you will wake up with a glowing face. using it after cleansing is to avoid moisture barrier.

Drying Time:

C.E.O. 15% Vit. C Brightening Serum dries out in less than a minute of applying it, within seconds you will begin to feel comfortable to see how your body completely absorb it, leaving you with brightening and radiance skin.


The scent of this face serum is like a fruit loops type of scent, that kind of smells you get from a sherbet orange sweet. Though the Fragrance scent contains both Tangerine Peel oil and Sweet Orange oil (Citrus Reticulata and Citrus Aurantium Dulcis). It’s a pretty strong citrus scent.

Short Term Results:

C.E.O. 15% Vitamin C Brightening Serum provides an immediate transformation with proven, measurable results. It gives instant brightening and softening effect when you use it at bedtime, the following morning you will notice a visible result in the appearance of pores and the area of brightened skin.

Longer Term Results:

Long term result after 30 days shown that is effective against dark spot, fine lines and wrinkles, the brightening effect is more visible when used for a longer period of time. Turning a dull skin to a bright one can only occur when you use it for a term.

Key Ingredients Analysis:

 The Vitamin C (15% Tetrahexyldecyl Ascorbate THD): Is one of the active ingredients that’s rated high in other product reviews, that brightens, clarify, and has antioxidant properties which is helpful in fighting the signs of aging caused by environmental stressors.

Phytosterols Complex: extracted from soybeans and contains 40 percent beta-sitosterol that helps to reduce sensitivity and redness, calm skin irritation and support natural defense,

Saccharide Isomerate Extract: Is an active ingredient that helps to reduce the look of pores, and  reinforce skin’s natural moisture barrier for a smooth and luminous skin.

Glycolic Acid: Is responsible to maintain the pH of the face serum for the vit. C to remain effective, and helps to exfoliate excess skin cells that are dead.

Squalane: A lipid that helps to repair and moisturize your skin.

Sodium hyaluronate cross polymer: a powerful humectant that hydrates your and eliminate appearance of pores.

Pumpkin ferment and pomegranate extract: contain enzymes that help exfoliate dead cells back to life.

Above all, this product is vegan, cruelty-free, and gluten-free, Free of sulfates SLS and SLES, parabens, formaldehydes, formaldehyde-releasing agents, oxybenzone, and coal tar, and comes in recyclable packaging.


Sunday Riley C.E.O. 15% Vitamin C Brightening Serum price is a little bit higher than the average price of other similar vit. c serums in this category, 1 oz for $85.00, I think that is a fair price for a face serum that actually deliver on its promise.


If you are not satisfied with your purchase, you can return your U.S. and Canadian purchase in stores or by mail. Restrictions may apply for returns made outside the U.S.

Tip: Our reviews are without bias, we don’t care much about the product manufacturers are saying , we care about you and what others real users are saying, there’s nothing more important than what rob on skin, that’s why all our product reviews are honest reviews.

Where To Buy: Sunday Riley C.E.O. 15% Vit. C Serum Click Below!

Summary of the review : C.E.O. 15% Vitamin C Brightening Serum
Factor C.E.O. 15% Vitamin C Brightening Serum
Overall Rating
Texture/Feel Tightening and firming feeling on skin
Application It’s recommended you apply to clean skin morning and night to face, neck, and décolleté.
Drying Time Less than a minute
Smell Not too pleasant smell. It’s a pretty strong citrus scent.
Short Term Results More plump and bright skin; decrease in sun spot and acne on the face
Long Term Results Increase radiance and luminosity on a dull skin, sun spots, less acne
Ingredients Hydroxy Acid, Lactic Acid, Collagen Amino Acids, Turmeric Root Extract, Citric Acid
Guarantee There’s a 30-days money back guarantee
Price $85.00 for 1 oz which is $85.00 per oz
Where To Buy

List of all the Ingredient:

“Aqua, Tetrahexyldecyl Ascorbate, Squalane, Polyglyceryl-6 Distearate, Peg-8 Beeswax, Limonene, Citrus Sinesis (Sweet Orange) Oil, Citrus Tangerina Peel Oil, Glycine Soja Sterols, Ppg-12/Smdi Copolymer, Sodium Phytate, Tocopherol, Phenoxyethanol, Acetamidoethoxyethanol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Jojoba Esters, Glycolic Acid, Caprylyl Glycol, Cetyl Alcohol, Polyglyceryl-3 Beeswax, Chlorphenesin Glycerin, Polysorbate 60, Sorbitan Isostearate, Saccharide Isomerate, Linalool.”


Please note the list of all the ingredient listed in this review is subject to change at any time. Always refer to the list of ingredients on the product package for updated list.