Vitamin C Daytime Repair Serum (0.5 fl oz)

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What It Does:

  • Restores a lit-from-within radiance to dull skin
  • Brightens and evens out sun damaged skin and hyperpigmentation
  • Prevents and repairs loss of firmness
  • Protects skin against aging environmental factors
  • Reduces redness and ruddy complexion
  • Smoothes out scarring and uneven texture

Who It’s For:

All skin types as an essential part of your anti-aging regimen at every stage of aging for prevention and repair, especially of sun damage, pigmentation, and uneven skin tone.

How It Works:

This is more than just a C serum. This is a combination of three potent, stabilized forms of vitamin C perfectly paired with a cocktail of powerful anti-aging active ingredients designed to deliver dramatic results.

Ultra stable, exceptionally powerful forms of vitamin C including 20% Tetrahexyldecyl Ascorbate, 3% Magnesium Ascorbyl Phosphate, and 0.5% Ascorbyl Palmitate create a glowing complexion without irritating most skin types, even most of those with sensitive skin. Vitamin C aids your skin’s ability to produce collagen and combats the loss of collagen that comes with aging and damage to leave skin firmer and less lined. Its proven antioxidant power protects skin from UV damage and environmental oxidation when used along with sun protective practices.

Phloretin enhances the penetration of all active ingredients making them even more effective while also acting as a potent antioxidant in its own right. This flavonoid contributes to evening out skin tone and pigmentation while boosting the performance of other ingredients.

Hyperpigmentation, dullness, and uneven texture all get a dose of serious work from ferulic acid, resveratrol, CoQ10, turmeric extract, and glutathione, which is considered one of the body’s most essential antioxidants for age repair and prevention. The synergy of all of these active ingredients and the many others that comprise this unparalleled formula deliver noticeable improvements to the skin that have garnered media attention and a cult following of devoted users.

Reviews (38)

38 reviews for Vitamin C Daytime Repair Serum (0.5 fl oz)

  1. Rated 5 out of 5


    I love love love this product. after using another famous brand’s vit c, i find this superior and more effective! Definitely a keeper

  2. Rated 5 out of 5


    i have a love hate with vitamin c serums as most completely clog my pores – this is an exception. Truly one of the best I’ve used!

  3. Rated 5 out of 5

    Betsy Mercer

    I’m 62 years old and despite having taken good care of my skin, I had developed dark spots, uneven texture and lines. When I researched effective products, I found a very famous dermatologist’s very expensive products. I asked my own dermatologist, who confirmed that the products were effective. I then researched products with the same ingredients and THANK GOODNESS I found KRS. The Vitamin C Serum is mind blowing. It reversed a good 10 years of skin damage within three months. After six months, no further damage has occurred. I would give it 20 stars if possible!! And the Company should be a model for all internet businesses. The owners personally respond to my questions, going above and beyond my high expectations. Shipping is fast and the packaging reflects the great care they take with their products.

  4. Rated 5 out of 5


    My skin is glowing ever since I have been using this product for about 6 months. I have had acne prone skin and this has stabilised my skin. A wonderful product!

  5. Rated 5 out of 5


    My daughter has been using the Vitamin C Serum daytime for about 6 weeks. I can defiantly see a difference in her skin. She has very oil and dry skin, along with sensitive skin, which makes it hard to find products that will work for her. This one works for her.

  6. Rated 5 out of 5


    I had been using the vitmain C serum from Primal Life Organics that was 150$ and though it felt luxurious, I hadnt been seeing all the results i thought it promised, fading my hyperpigmentation, helping with acne, making my skin brighter. This, however, did the trick at a fraction of the cost, and in much faster time. I believe, this serum, in conjuction with my salicylic cleanser and the total nutrition night repair complex help brighten, soften and fade those pesky red spots left by breakouts of my acne prone skin. After using this regimen for a couple months, a co worker actually remarked that my skin looked so “glowy”, which i had never received before. I still havent found as much relief on the breakout prevention side of my regimen, but will be updating my reviews once I hit the 6 month mark if anything changes. I appreciate having products that help wipe away evidence of my breakouts so effectively though!

  7. Rated 5 out of 5

    Judy Brown

    First time using Kate Ryan Vitamin C day Serum. I loved how smooth my face feels after applying it. I have annoying dark spots and this seems to be helping. I have tried other expensive brands but I didn’t see any change in my skin. I love this stuff. I just ordered two more products from this amazing brand. Thank you .

  8. Rated 5 out of 5

    Ann Marie

    The product was shipped promptly and arrived earlier than expected. My husband made the original purchase this product for me and I have reordered and been using it for 5 months now and it is remarkable…leaving my skin smooth and lightening my aging spots. I have even used it on several spots on my arms and have had great success. This is the “serum of youth.” I will definitely purchase this again. I have spoken to Beverly, one of the owners, several times and received excellent advice regarding product usage!

  9. Rated 5 out of 5


    So i have been using this product for a couple of months now, and I’m definitely hooked! This is a fantastic product! It gets the same results that the other much much higher priced products get, and i will absolutely be ordering this again! It does tend to separate after a little while but it still continues to spread and absorb easily. My skin is somewhat breakout prone, and this does not break me out whatsoever! I have been using this product in combination with the total nutrition night cream and have found something that my fickle skin really seems to like! Great products! You can’t lose with this one!

  10. Rated 5 out of 5

    Gloria Bray

    My absolute, all time favorite product! Thanks for your high quality products!

  11. Rated 5 out of 5

    Lindsay Manjarres

    I love this stuff! I accidentally spilled a little and just about cried…because literally it is like liquid gold. My skin is more even and brighter. Thank you so much Kate Ryan! This is a great product.

  12. Rated 5 out of 5


    I LOVE this serum. I have been using it for about 14 days now and noticed results in the first 2-3. I have very bad dark spots from pregnancy on my face and this has made a HUGE difference. I cannot wait to try more products. My skin has a natural glow, is much smoother and the spots are much less noticeable. I have tried just about every treatment there is included dermatological peels and did not get these kind of results. Thank you for an amazing product.

  13. Rated 5 out of 5

    Olivia Romero

    I love this serum! I noticed a difference the first week. My dark spots have faded and overall my skin looks brighter. This is a great price for a product that actually works. Thank you Kate Ryan!!

  14. Rated 5 out of 5

    Ann Smick

    I am a first time user of Kate Ryan Skincare, and so far, cannot rave enough about the Daytime C Serum! This product truly delivers results. I’ve been using it for approximately four weeks and my skin is not only smoother, brighter but also clearer. I did extensive research on serums, and found this to have everything I was looking for, esp Vit C, E & Resveratrol. I appreciate the care taken by KR regarding the ingredients. You don’t need much, a little goes a long way! I not only will continue with this product, I will be ordering more of the KR line! Also, a big shout out to Redbook magazine, as they were part of my reason for choosing KR! One more thing – KR packaging-wow! It was beautiful, like receiving a special gift. Very personal details! Thank you for a product that really works!

  15. Rated 5 out of 5


    I love the daytime Vitamin C serum and have re-ordered it several times! Prior to starting to use Kate Ryan products, I have tried many different Vitamin C serums. I like the feel and quick penetration of the KR Vitamin C serum and feel my skin look brighter and smoother (and I’m well north of 50!).

  16. Rated 5 out of 5

    Nancy Ann

    I began using Kate Ryan Skin Care products in February of 2013. The Vitamin C daytime is one of my favorite in their line. It feels so awesome when I put it on in the morning, prior to the rest of my products from Kate Ryan. I have tried some expensive lines, some only available from a doctor’s office and haven’t found as good results. Look at the ingredients when you buy products for your skin. Kate Ryan uses only high quality ingredients and no fillers. You’d be surprised at what you find in most other skin care lines. Bottom line is the results I see in the mirror and the compliements I receive, “you have beautiful skin” I know Kate Ryan Skin Care has made a difference for my skin.

  17. Rated 5 out of 5


    I have tried many Vitamin C serums in the past, none have prompted me to repurchase. I have used this product once daily for about 6-8 weeks and I have noticed some improvents. A few stubborn sun spots are finally fading. Other benefits I have noted are improved skin tone and texture, and an overall brighter look.
    I am approching 45 and have normal to dry skin. You do not need much of this serum, 4-5 drops on damp skin is more than enough. It absorbs rapidly, you can apply your moisturizer or SPF within a few seconds of application. The serum is not greasy, did not cause any breakouts, stinging or redness as other serums have. A pleasure to use and worth repurchasing. Also, customer service with Kate Ryan is fantanstic, questions are answered quickly and staff is very friendly.

  18. Rated 5 out of 5

    Leandra O.

    I’ve been using the daytime vitamin C serum and the vitamin C night repair serum for a couple of weeks now.I’am so happy with the results I’am seeing.My skin looks like it is glowing.I will continue to use these wonderful products.

  19. Rated 5 out of 5


    I noticed a difference after day2. My age spots had started to fade.
    I’ve been using it a month and one age spot is gone. The others have faded. My complexion is smoother and brighter. I love the feeling of my face so soft & smooth. My skin is usually dry & sensitive. With this product, I had no problems.

  20. Rated 5 out of 5


    I have been using the Vitamin C serum every morning for almost a month. I love that I only need to use a few drops and my skins feels renewed and bright. My fine lines are all filling in as well. I have pretty sensitive skin and my eczema can be aggravated by most products. However, I have had no problems with any of the Kate Ryan products I have been using! I’ve also been very impressed with their customer service. They have answered my (countless) questions and personally made sure my shipments made their way to me quickly. I can’t say enough good things about this company!

  21. Rated 5 out of 5

    Leisa Ellis

    Just received my product last week , so I can’t claim how wonderful the results are just yet,but I can say I was very impressed with the packaging and the service of the company! The detailed notes felt very personable and the extra touches felt feminine and thoughtful. Thank You for your kind service!

  22. Rated 5 out of 5


    I have been using this product for a little over a month and am noticing improvements in my skin tone and texture.

  23. Rated 5 out of 5


    I have never used a Vitamin C serum before and I am so thankful I started! This serum is amazing. In a month of using this twice daily (morning and night), I have noticed that my skin is brighter, softer, and dark spots are fading. Couldn’t be happier with this product!

  24. Rated 5 out of 5


    Out of all the products I have tried with KR the Vitamin C Serums are by far the best, gives skin a brightness, helps breakouts become less frequent, no negative side effects.

  25. Rated 5 out of 5

    Lisa Alcantar

    I found KRS through a friend. I have notoriously sensitive and mercurial skin, which always makes me nervous to try new lines. KRS staff was exceptional in finding me the right products. The Vitamin C day and night, however, have been essential for balances my dry and often dull skin. My excema flare ups are easily controlled with vitamin c. Highly recommend!

  26. Rated 5 out of 5


    I credit the many comments I receive on my complexion to KRS. Their Vitamin C Serum collection makes my skin glow and keeps my acne at bay. I will admit, I was weary about using the serum on my chin where I suffer from acne, but to my surprise, my acne has cleared up and blemishes from past acne have faded drastically. I can’t say enough great things about KRS products.

  27. Rated 5 out of 5


    It’s always been a struggle to keep my skin balanced. After my mother suggested this Vitamin C serum, I decided to give it a try. I love the holistic and natural feel to this brand. Putting on this serum feels less like a chore and more like a pampering session 🙂

    I’ve rarely ever felt confident enough to leave my house without makeup on. Now, I do it all the time! My skin feels fresh all day long, and I can finally say I have a “natural glow”!

    Thanks for helping to restore my confidence, Kate Ryan. I cannot wait to expand my collection of products!

  28. Rated 5 out of 5


    This vitamin C serum is brilliant. It keeps my acne and redness at bay. It’s very powerful, yet so gentle for my sensitive skin (even around the eyes). It brightens skin, evens skin tone and enegizes the skin. I am glad I found Kate Ryan Skincare after having educated myself on natural ingredients that work. The search is officially over; I was already convinced with the ingredient list, but after trying it, it really exceeded my expectations. I do not drink coffee, I just need this serum in the morning and I am good to go!

  29. Rated 5 out of 5


    I’ve tried other Vitamin C serums and none are as true as this one. My skin looks healthier and doesnt produce excess oil. This product, along with the Salicylic Cleanser, has changed my skin for the better!

  30. Rated 5 out of 5

    Carolyn Z.

    I have been using Kate Ryan Skincare products for about a month and the Vitamin C Daytime Serum has been a wonderful addition to my anti aging arsenal! Applied in addition to my daily moisturizer, it absorbs almost immediately without any excessive oiliness left on the skin. My makeup goes on smoother and my skin is actually brighter. I can actually see the health benefit on my face from using the Kate Ryan line!

  31. Rated 5 out of 5

    Gina T

    I have just started using the Daytime Vitamin C serum….I HAVE FINALLY FOUND THE ONE! My search is over. I have tried numerous Vit C serums on the market & had no success…I have extremely sensitive skin that is highly reactive. Finally no irritation! Looooove this product 🙂 Thank you for making such a quality line of skincare.

  32. Rated 5 out of 5

    Melanie M

    This is a great product! I have been wanting to use a Vitamin C product, but the price has kept me away. Here, the price is so very reasonable, and the product is dynamite.

  33. Rated 5 out of 5


    I started using the Vitamin C Daytime Repair Serum a few months ago and have enjoyed the look and feel of my skin since! I have dry skin and found that the recommendation to use the Vitamin C night and daytime repair serum together was the perfect combination for my skin. My skin looks smoother and more hydrated than ever before. I love what the Vitamin C Serums have done for my skin!

  34. Rated 5 out of 5

    Mary Ann

    When I saw my dematologist in May, she asked what I had been using on my face. I told her about KRS and the products. Her comment: “Whatever you are doing, keep doing it. Your skin looks amazing and you have no signs of roseaca!”
    What a great endorsement for KRS!

  35. Rated 5 out of 5


    I love vitamin C serums- they brighten your skin immediately and give you a glow that makes the skin bright enough to run out without makeup on. This is the first vitamin C product where you can actually SEE that it contains Vitamin C- it is orange! Gives a boost of confidence that you’re getting a potent dose of Vitamin C every time you use it. I will be buying the night time next!

  36. Rated 5 out of 5


    I love this Vitamin C daytime serum. I began using it about two months ago – applying every morning – and I can see a huge difference in my overall skin tone. I was hesitant at first because I have oily, acne prone skin but this serum has improved my skin so much. Thanks Kate Ryan!

  37. Rated 4 out of 5


    This is one of first products I started to use it has been good for my skin. I’m 61 years old this has helped with my dark spots and the redness in my skin. Thank you for this great product!

  38. Rated 5 out of 5

    Mary Ann

    I have been using Kate Ryan products for about a month now. It is really hard to pick a favorite product, since they are all great, but I think the Vitamin C Serums, both Day and Night, are my #1 pick. My skin feels incredible after I apply them and I can see a real difference. I can’t wait to see my dermatologist in the spring and see what she says! Thank You!

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