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  • Obagi Professional-C Serum 20%

Obagi Professional-C Serum 20%

Oily skin
(23 customer reviews)

Original price was: £149.00.Current price is: £85.00.

Highest concentrated serum with 20% L-ascorbic acid (Vitamin C), best suited for mature or oily skin. Helps minimise the appearance of fine lines and wrinkles.
Topically, L-Ascorbic Acid is found in the Obagi’s Professional-C™ serums in concentrations of 10%, 15%, and 20%. You can apply a few drops of the serum to the face, neck, and chest every morning before your sunscreen to start gaining the beneficial properties of Vitamin C.

30 ml

Highest concentrated serum with 20% L-ascorbic acid (Vitamin C), best suited for mature or oily skin. Helps minimise the appearance of fine lines and wrinkles.

Topically, L-Ascorbic Acid is found in the Obagi’s Professional-C™ serums in concentrations of 10%, 15%, and 20%. You can apply a few drops of the serum to the face, neck, and chest every morning before your sunscreen to start gaining the beneficial properties of Vitamin C.

Obagi has captured the benefits of Vitamin C in the Professional-C™ serums, which offer Vitamin C in a rich, concentrated formula.

  • Help minimise the appearance of fine lines and wrinkles,
  • Are proven to be stable at a low pH for long-lasting shelf life,
  • Higher penetration of the skin when compared to SkinCeuticals Serums,
  • And absorb and remain in the skin.
Reasons to Add Vitamin C Serum to Your Regimen

As we age, our skin naturally tends to show more signs of photoaging, such as fine lines and wrinkles. One of the ways our skin can help keep itself renewed and healthy-looking is with antioxidants like Vitamin C.

  • Enhances UV protection,
  • Calms Skin,
  • Helps keep skin hydrated by enhancing moisture content. Add Vitamin C serum every day and watch it work hand-in-hand with a daily moisturiser to help skin stay fresh-looking and moisturised,
  • Topical Vitamin C helps brighten the complexion for a more youthful, fresh looking skin, which is the marker of vibrant health.

Ingredients: Water (Aqua), Propylene Glycol, PEG-12 Glyceryl Dimyristate, Glycerin, PEG-7 Glyceryl Cocoate, Silica, Lactobacillusferment, Carbomer, Phenoxyethanol, Triethanolamine, Betaine, Ruscus Aculeatus Root Extract, Ethoxydiglycol, Pentylene Glycol. 

23 reviews for Obagi Professional-C Serum 20%

  1. CS

    Caroline Stevens

    Arrived in excellent condition and packaging was enough to keep the glass bottle from moving around in the box. IÕve used this serum a few times and every time, it tingles my entire face for at least 5 mins. Instructions do say to be aware but it may be too intense for me. Overall, the serum glides on easily and doesnÕt leave a residue. Hoping that the tingling goes away soon.

  2. AC

    Aneesa Copeland

    I have been using this for almost a month. I had hyperpigmentation around be hairline on both sides of my face. My face was dull and tired. Once I stated using this, I noticed my face looking brighter. The dark splotches around my hairline were fading. My skin is looking so much better. I can pull my hair back without hesitation. My skin is glowing. This stuff is amazing.

  3. SP

    Sion Perry

    I bought this after a friend suggested it and how I noticed how her face has really looked younger. I have been using it for 3 weeks and have already seen a difference. My husband even thought I got work done on my face. I love it and will continue to use this and very affordable.

  4. TF

    Tamzin Frederick

    Love Love Love this product! I have tried different Vit C serums and this is by far the best for my acne prone skin. My complexion is so much smoother while using this serum.

  5. NS

    Nate Stevenson

    My skin is GLOWING after 2 weeks of use. My complexion has cleared tremendously and I have received many compliments on my skinÕs smoothness with and without make up.i use with Retinol 1%, and Matte 50 SPF sunscreen.

  6. EF

    Elsa Friedman

    IÕve used this product for over 15 yearsÉI use all the Obagi products and will never change! IÕm 80 years old and people guess me around 60 years ole! __

  7. CW

    Chelsea Wright

    IÕve been using this for about three weeks now and I like the results! Healthier looking skin. Brighter, smoother, clearer skin. I apply it in the morning to clean skin and follow with moisturizer. Like the little tingle and the antioxidants!

  8. K


    This is my go to when its sunny. Perfect under the sunblock.

  9. ?


    Just started. Dont know yet.

  10. A


    This serum is essential! It leaves my skin hydrated, soft, clear and even works great as a primer under my Skinbetter tone smart compact!

  11. CM

    Cerys Massey

    I have been using Obaji products for about 13 years. I tried using the over the counter brands ,but nothing makes my face feel, and look as soft n smooth like this product, started using professional C serum instead of # 4 about 6 years ago, and the darks spots are starting to lighten up ,giving me a even skin tone with in a few wks after use.

  12. FS

    Faiza Sheppard

    After my dermatologist recommended that I use a vitamin C serum on a patch of damaged skin, as well as my face and neck. Knowing that if I didnÕt see quick results I probably wouldnÕt continue to use it, I decided to go with the 20% serum. I also incorporated a toner into my daily routine. Within 3 weeks, I saw healthier, brighter skin on my face and the lines on my neck faded a little. On the patch of damaged skin, I am seeing an improvement, although not as drastic. I used to get unsolicited comments on the extreme redness and I have not received those in a while. IÕve experienced tingling that a few other reviewers had mentioned, although not uncomfortable and not all over. Overall, I am very happy with my purchase.

  13. CH

    Chloe Herrera

    I am 71 years old and people always say that I look like I am in my forties. I give most of the credit to my Obagi 20% Vitamin C Serum. I love it. I really stopped using any skin-care products during the Covid time-frame and it showed. When I started using the 20% again-my husband noticed the difference immediately. He thinks that my face looks brighter and more vibrant. YAY.

  14. SM

    Sylvie Matthews

    I began using the Obagi Professional C serum recently and really like it. It comes in a dark bottle to preserve the serum and includes a dropper to measure how much to use. I use 5 to 7 drops every morning on my face, before using moisturiser, as per directions.It makes my face feel smooth and gives it a dewey finish.I love having a nice glow on my face!

  15. OB

    Ophelia Beck

    I have seen the texture of my skin with the daily use of this vitamin C . I wish I could give this blue bottle more than 5 stars.,

  16. WM

    Willow Medina

    I purchased this for myself about 3 months ago and I absolutely loved it!! So I decided to get my mother one, she is 62 and has really good skin, but thought since she lives in Arizona her skin can get al IÕll dry and dull. She has been using for the past 3 weeks and her skin is visibly more radiant and brighter, she has been getting so many compliments on her skin lately and itÕs thanks to this serum.

  17. SM

    Selina Matthams

    I’m happy you can now order products directly for Obaji, because it can be a hassle sometimes trying to find a clinic that have exactly what you need.

  18. NG

    Naima Goodwin

    This vitamin C serum is awesome! This Serum has a slightly oily feel when applied, but totally absorbs within a few minutes. It doesnÕt make my skin break out and I have noticed it has made my skin brighter and more even toned. The texture and smell are great and makeup goes on smooth on top. I will continue buying. CanÕt wait to continue to see results!

  19. FB

    Florence Booker

    I love this serum. I can tell a big difference when using it. My skin is more clear and it helps lighten the dark spots.

  20. AP

    Annabella Pennington

    LOVE this! It works very well and feels so good on my skin. I’ve used it for several years and it shows. It’s pricey but you only need a few drops every evening. When I tell people how old I am they never believe me. I like that!

  21. PM

    Paula Marsh

    Moisturizes your skin! I donÕt even need a cream or moisturizer gel when I use this serum. Not only does it help make my face look and feel better with a youthful glow, I am also nourishing and protecting my skin. Have tried other vitamin c serums from the dermatologist office and Obagi is the very best.

  22. RF

    Robyn Floyd

    This product produces RESULTS. This is my secret weapon, and is in a league of its own. I havenÕt found any other product – none – that matches this serum. My skin is brighter, tighter, and I GLOW.

  23. WR

    Wade Riggs

    I have used the Obagi Professional Serum for about week. I like the way it makes my skin look and feel. It is easy to use and I also like how it is intended for face, neck and chest. The only improvement that could be made is fragrance.

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