Sunday Riley C.E.O. 15% Vitamin C Brightening Serum - 0.5 fl oz - Skin Tone, Firming & Wrinkle Reduction

Burned by skin. Used it for 2 weeks. I have mixed skin. I HaD high hopes. Considering the price. Expected more.

I wanted to love this product....and usually I do not breakout easily at all, but this product is so heavy and feels oily on my face that it has caused me to breakout in the the two weeks of me using it. returning it immediately!

Love it.

Smells amazing and is evening out my skin tone.

I loveee this product!! Of all the skincare products I actively use and have tried, this one probably has had the most visible impact on my skin. I'm in the 25-35 age range, have combination skin that leans dry, and can sometimes react to new products. I used to have a bit of an uneven skintone with a fair bit of redness (even after cutting dairy, which was a major contributor to the redness/inflamation). I first tried the less concentrated syrum version of this product and loved it enough to want the stronger option. Within one bottle my skin was quite literally smoother, had a more even texture, was brighter and no more redness! That was the first time I had honestly seen an undeniable improvement from a skincare product. It smells so nice (like oranges!) and has a wonderful smooth texture kind of like a thin lotion. It dries fast and doesn't leave any sort of sticky feeling like some vitamin c products tend to do. Out of curiosity, I took apart an empty bottle and the product is pumped from a small sealed bag which is keyyy for vitamin c. Vitamin c is unstable when exposed to air, light and heat so to maintain its effectiveness it must stay sealed and cool. I've heard that some people have a hard time with vitamin c causing a reaction but I've never had an issue with any of the products I've tried. So maybe it's just me but this hasn't bothered my skin at all. Any time I get a compliment on my skin I recommend this product and have hyped it up to all my friends lol the biggest benefits I've seen are eveness and redness reduction. Brightness has improved slightly but I'm looking for another product to really target that. My only downsides are the cost and replacement rate. Any good vitamin c product is likely to be one of your more expensive items (expect $60+, easily) and this is no exception. I replace this the most out of all my stuff, but it's a no-brainer every time because it for real works!

I took the bottle apart and what somebody else had taken a photo of in May 2025. The bottle weighs a lot making one thing there's more to it cutting it open. It's a very small amount of product for a very high price not enough vitamin C to make a difference, but it did create a glowing effect on my face

Let me start with saying this was a gift. Now, right to it: before you spend money on this, look into the very popular Vit C serum with ferulic acid. It's the world's most popular and with good reason. If you're willing to spend at this price point, spend a little more and get your every cents worrh. Also, learn about incredients—this one does not contain yhe best. The one I mentioned above (the app won't let me mention the brand), has a cheaper contender—below $50—with very similar ingredients. It, too is phenomenal and effective serum. One brand starts with skinceu….. and the other brand is time….. Both have L-Ascorbic Acid and ferulic acid. The latter, even at a cheaper price point, is more effective than this, and both leave your alin glowing. Perhaps I would have fell for this and even enjoyed it had I not known and tried better products beforehand, but alas, I'm an ingredient and skin care connoisseur.

So this is my first winter living in the Pacific North West. In late November after a particularly cold weekend, I noticed a patch of dry skin had formed underneath my eye. It resembled a dark sun spot on my fair skin. I tried several different creams but my skin was not healing. I started applying this serum twice per day, and within a week it was finally healing. I think the spot is barely noticeable now. The skin around my eyes feels more moisturized and my dark circles aren't as bad as before. I also love the way it smells.

Great product. Makes skin glow but used with oil and gel in very dry conditions left my skin bright but moist. Smells great.

Package was deceiving. Small bottle lasted me two weeks. Its unfortunate. Makes me not trust the comoany. The product is nice but didnt get to use it long enough to see results.

Love

I liked this a lot and was planing to repurchase until it ran out suddenly. Opened the bottle to discover the tiny bag that had contained the miniscule amount of product in the first place). Wow. The bag is actually great from a freshness standpoint but I'd NEVER spend this amount again on it.

I’ve been through so many bottles of this I can’t count. I love this. It’s the perfect moisture, and my skin feels nourished glowing and evens my skin tone.

Great product and it really works for me !! Love Sunday Riley !

I've tried other vitamin C serums and they either smell weird, don't work, or give me huge red rashes on my face. This one works and is sensitive skin friendly! I never broke out one time. And it really makes a difference in the glow and eveness of my skin.

Helps my face glow again within two days. Amazing product!

The product is fine overall and I’d probably use it again. I bought the travel size as a trial but beware that there is just a tiny pouch attached to the pump, not an actual bottle. I’m pretty frugal with $$$ product and discovered this after about 10 days.

I think company should be ashamed for the packaging and how little product you get. Once product gets low pump goofs up making it extremely hard to get remaining product. Id say look into the Vichy or another brand. I noticed no difference after a whole bottle.

Though i did like the smell and feel after applying. After using for a few days i had an allergic reaction. My eyes and face became very puffy and swollen. If you have sensitive skin i do not recommend.

Try it for yourself