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Regena C20 20% stabilised Vitamin C Serum

with Dill, Liquorice, Hyaluronic Acid and Pantothenol.

Vegan ✔ 365 day guarantee ✔ Cruelty-free ✔ Paraben-free ✔

    • Regena C20 is a 20% Vitamin C (sodium ascorbyl phosphate) serum. The anti-oxidant benefits of Vitamin C with skin-loving hyaluronic acid, liquorice and dill.
    • The vitamin c in Regena C20 can increase firmness, even out skin tone, brighten dull skin, reduce age spots and significantly reduce acne bacteria.
    • Our serum won't oxidise - we use a stable form of vitamin c (sodium ascorbyl phosphate) that is as effective as l-ascorbic acid but won't oxidise as easily. Regena C20 is packaged in a bottle that protects the serum from UV light.
    • Panthenol (vitamin B5) fights redness, irritation and itching and promotes skin repair.
    • Dill extract can regenerate elastin and liquorice extract helps reduce dark spots and hyperpigmentation.
    • Squalane provides glide and natural emollience.
    • Use on its own or underneath your moisturiser to penetrate into the deeper layers of your skin.
    • Natural - vegan, paraben-free, no silicones, polyethylene glycols (PEGS) or mineral oils and not tested on animals. Made in the UK.
    • Concentrated and long-lasting, 30ml of this serum offers exceptional value.

    Regenca C20 is a 20% stabilised vitamin c serum (sodium ascorbyl phosphate). The stabilised Vitamin C in Regena C20 can increase skin firmness, lighten age spots, help fight propionibacterium acne and brighten skin - reducing pigmentation and hyperpigmentation.

    Active Ingredients
    Aloe Vera
    An antibacterial and anti-inflammatory in one, great for soothing sore patches, relaxing spots, and even protecting from harsh UV rays.
    Dill Extract
    Dill can help influence elastin production - one of the few natural ingredients to do so.
    Ferulic Acid
    The best thing that ever came from bran, ferulic acid is a powerful anti-oxidant that prevents free-radical damage and stabilises essentials like vitamin E.
    Hyaluronic Acid
    A humectant, it draws water to the surface of your skin, keeping it soft, supple, and healthily hydrated. It’s also a helpful way to make sure other ingredients penetrate deep into the epidermis.
    Liquorice Extract
    Effective against dark spots, hyperpigmentation and acne-causing bacteria. Great for sensitive or redenned skin.
    Pantethenol (Vitamin B5)
    Panthenol is a humectant that gets to work on the stratum corneum to help reduce redness and itching.
    Vitamin C
    An essential anti-oxidant, vitamin C protects event the most sensitive skin against UV damage. And if the damage is already done, don’t worry – vitamin C stimulates useful collagen production, ideal for repair and restoration.
    Vitamin E
    A fat you can make friends with. Vitamin E is a clever fat soluble that hydrates and repairs your skin, leaving it full and fresh.
  • Give Regena C20 a gentle shake to activate. Apply a few drops to blemishes, fine lines, dark spots and areas of hyperpigmentation.

    Vitamin C is also great to use on acne and areas of inflammation and itching.

  • Aqua, sodium ascorbyl phosphate (stabilised vitamin c), propanediol (humectant from corn syrup), lactic acid (aha, vegan source), squalane (olive), polyglyceryl-6 stearate (vegetable-derived emulsifier), polyglyceryl-4 oleate (vegetable-derived emulsifier), tocopherol (natural vitamin e), panthenol (vitamin b5), cetyl hydroxyethylcellulose (vegetable thickener), glyceryl caprylate (emollient), antheum graveolens (dill) herb extract, glycyrrhiza glabra (liquorice) root extract, polyglylceryl-6 behenate (vegetable-derived emulsifier), xanthan gum (rheology modifier), aloe barbadensis (aloe vera) leaf juice, ferulic acid (anti oxidant), sodium phytate (natural chelator), sodium hyaluronate (salt of hyaluronic acid), citric acid (pH adjuster), potassium sorbate (salt of sorbic acid).

    This product is free from

    Animal ingredients, benzalkonium chloride, benzophenones/benzophenone derivatives, bisphenol a (BPA), butoxyethanol, BHA, BHT, carbomer, coal tar dyes, -cones, ethanolamines (MEA/DEA/TEA), formaldehyde, hydroquinone, liquid petrolatum, methyl cellosolve, methylisothiazolinone, methylchloroisothiazolinone, mercury, mercury compounds, mineral oil, oxybenzone, parabens, paraffin oil, pentylene glycol, phenoxyethanol, phthalates, polyethylene glycol (PEGs), resorcinol, siloxanes, sodium nitrite, sulfates, thimerosal, toluene, triclosan, triclocarban.

  • ColourCreamy yellow
    pH6.5 (the stabilised form of vitamin c is a salt so doesn't require a low pH)
    ContainerAmber glass bottle with dropper that protects actives from UV light.
    Rheology / GlideThin and creamy. Easily absorbed.
    Odour Hints of botanicals and citrus.
    Sulphate / SLS free

4.61 Average

268 Reviews

Cheryl Thomas

Very good product, will continue to use


Makes skin look brighter after only a couple of uses

Jazz Bansal

Just after one use my skin felt so smooth and soft and the texture looked smoother and brighter, love this stuff, part of my daily routine now!



I've been using this serum for a couple of weeks so it's early days but I can already see my skin tone evening out (I have a bit of redness) and my dryness has almost completely disappeared. I'm wearing less foundation now which is a bonus!


Andrea Jennings

I've only been using this particular brand of vit c serum for a short while and the jury is still out. Compared with a previous serums this one is cloudy in colour and feels slimy when u apply but it dries ok. It smells like vegetable oil which isn't pleasant. My skin still feels good and I haven't had any spots so maybe it's working??? I think I prefer the thinner serums but I've got 2 bottles of this so I'll keep going

Hi Andrea Thanks for your review - the sodium ascorbyl phosphate does have a slight smell at 20%. Hopefully if you can stick with it you'll get some good results :) If not please contact us at help@facetheory.com for a refund or exchange. Jamie

May Daniels

Always use this, wonderful product, keeps my skin in tip top condition

Sara Thompson

Gosia Myslicka

Fantastic product, my 15 year old son has problem with his face skin (lots of spots, red skin after acne etc.). His skin is much lighter, scars are almost invisible and are disappearing. I am actually shocked because I didn't expect that visible results. I am using this product as well as a serum under my night cream. Love this product

Lucy Carr

Amazing! Noticed a huge difference after just a few days. Skin looked much smoother and less dehydrated.

Aaron Gibbs

Good results, have enjoyed using the product

Fiona Andrew

Use this AM, has definitely had a smoothing effect. Sits well under moisturiser too.

Pat Thorne

Brilliant, I'm 70 not a wrinkle in sight, wouldn't be without it, my hairdresser asked me, what do you use on your face, after telling her she asked me to order some for her, our order arrived yesterday. Hopefully you will hear from her soon

hina sohrab

I was looking for a good Vitamin C serum and I found FaceTheory products through Facebook Ad. Going through all reviews, I proceeded with the purchase and I am so glad that I bought it. It's just 7 days I have been using it and can feel my skin glowing and smooth in the morning.

carolyn Martone

Great product, not an instant fix but gradually, over a few weeks, I have definitely noticed a smoother clearer complexion. I am nearing 60 years old but am very pleased with the results which also seem to be hydrating and whilst my wrinkles won't disappear they are not as prominent.


Very happy with this product.


Great serum -my skin did look visibly brighter and more glowing after using this! I apply it to face whilst slightly damp straight from shower and let it soak in and dry well before applying my moisturiser so my moisturiser doesn’t slide off or bubble and have had good results! I tend to use retinol based products at night and vitamin c and hyaluronic acid products with spf for daytime. Very pleased with this product would definitely order again.


Recently bought this serum, it’s really great I use it once a day, and haven’t had any problems at all even though my skin is sensitive. My skin feels softer and my pores smaller. The price is reasonable and I’m glad to support a vegan cruelty free company always. Not to mention their service is great, my friend’s bottle had a malfunction and they shipped her a replacement.


I don't usually write reviews but this product worked so well for me I just had to! I started using this product a couple of months back and I would say after about 2 months of use I saw HUGE differences in my skin. I noticed my skin was brighter and smoother and I even got compliments from family members about how healthy my skin was looking. I started getting less breakouts and it boosted my overall confidence. The only small downside is the product is slightly sticky however thats only initially, once it dries on your face its fine! All I can say is if you're unsure about this product, just give it a go!

Julia Rozen

Amazing, noticed a difference from the first use. Texture is easy and smells divine. I will definitely repurchase!

Gloria Fieldhouse

I love it so far it leave your skin very hydrated hope my dark spot will improve as well. Thanks facetheory


I've been using this every night for just over a week. It makes my skin soft and luminous and has started to work on some small areas of hyper pigmentation as well as clearing up a tiny bit of congestion I had on my cheeks and forehead.

Jessica Kennedy

Really really good product ! Very gentle and has given my skin a great glow and much more even complexion, I have very sensitive skin so always a bit apprehensive to try new things but I’m so glad I’ve discovered this!

Lauren Willimott

This is a new staple in my skincare routine. It goes on really smoothly and leaves a fab glow!


Working miracles for my skin.


I’ve only used it for a few days but so far I do like it, I’ve still had breakouts but the texture of my skin has evened out really well

Syeda Hina Ayaz

Magical! It's part of my night time routine. Loved it. Also reviewed it on my blog.

Tonicha-Mai Patterson

Like this serum a lot, it helps my blemishes clearing them in almost a day. Saying this however it is slightly sticky and doesn't absorb very well to wear in the day but it perfect to put on just before you go yo bed and leaves your face feeling fresh and glowing the next morning. A perfect serum, but for night time use only in my opinion.

Pat Thorne

Its fantastic

40% off your first order!