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Glow-C Vitamin C 20% Serum

Delivers glow without the grit.A high-dose 20% vitamin C serum that visibly brightens, evens tone, and smooths texture—without the grease or irritation. Read more

Benefits: Antioxidant protection, fades hyperpigmentation and dark spots

Targets: Hyperpigmentation, Dark spots, Uneven skin tone, Dull skin

Ingredients: 20% vitamin C, Ferulic acid

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Glow-C Vitamin C 20% Serum

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About The Product

Glow-C Vitamin C 20% Serum was made for those who’ve tried every “brightening” serum—only to be left underwhelmed, irritated, or shiny. This powerhouse formula pairs a full-strength dose of 20% ethylated vitamin C with ferulic acid and skin-quenching glycerin to deliver visible results with none of the usual side effects.

Our stabilised vitamin C remains clear (never oxidising to brown) and glides on weightlessly, absorbing quickly without pilling or leaving behind a greasy film. Ferulic acid amplifies the antioxidant effects and helps defend against free radical damage, while glycerin locks in hydration for a smooth, radiant finish.

Whether you’re layering under SPF or targeting lingering dark spots, Glow-C delivers clinical performance in a gentle, non-irritating formula—no fragrance, no filler, just real results.

P20% Ethylated Vitamin C (Ethyl Ascorbic Acid)
A potent, stabilised form of vitamin C that brightens skin, fades dark spots, and supports collagen production—without the irritation or instability of traditional ascorbic acid.

Ferulic Acid
A plant-derived antioxidant that enhances the effects of vitamin C while helping prevent and fade the appearance of dark spots and fine lines caused by oxidative stress.

Glycerin
A skin-identical humectant that draws in moisture and keeps skin plump, hydrated, and comfortable.


Ingredients list:
Propanediol, 3-O-Ethyl Ascorbic Acid, Olive Oil Polyglyceryl-4 Esters, Dibutyl Lauroyl Glutamide, Dibutyl Ethylhexanoyl Glutamide, Ferulic Acid.

Because our formulations are periodically updated as part of our commitment to innovation, the ingredient list shown may vary from the box of the product depending on time and region of purchase.

You've tried the rest, now try the best: 4/5 Vitamin C addicts say it's the best they've ever tried

Delivers the power of a full-strength 20% vitamin C serum without the usual side effects.

No grit, no grease, no fragrance — just glow

Full-strength 20% ethylated vitamin C — stable, powerful, and effective

Loved by sensitive skin users and glow-seekers alike

Independent user trial on 118 participants over 4 weeks

Apply once daily to clean, dry skin.
Layers smoothly under moisturiser, SPF, or makeup.

Are there any precautions I need to know before using this product?
For external use only. Always patch test prior to use and discontinue use if irritation occurs. Avoid eye area. If direct contact with eyes occurs, rinse thoroughly. Keep out of reach of children. Store in a cool, dark place.

What's the difference between this serum and Glow-C Vitamin C 30% Serum?
Our 30% version contains a higher concentration of Vitamin C. If you're new to Vitamin C, we'd recommend starting with 20%.

How often can I use this?
This product has been designed for daily use, both morning and evening. Always patch test first, gradually introducing any new product into your routine depending on your skin's tolerance.

Can I use this during pregnancy and/or while breastfeeding?
This product is safe for use during pregnancy and breastfeeding. However, it is always best to consult your doctor or healthcare professional before use.

What skin types is this suitable for?
This product is suitable for all skin types.

RECYCLABLE*:
Bottle: glass
Carton: cardboard

GENERAL WASTE**:
Pipette: mixed materials

*Always check your local recycling guidelines as facilities capabilities vary across the country.
**We are working hard to try and find alternatives for packaging which can't yet be recycled from home.

For pieces of packaging which you can't recycle curbside, you can drop them off at your nearest beauty product recycling point. Find your closest one here:

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  • 10+ years of affordable, vegan products Built for accessibility. Rooted in results. Always cruelty-free.

  • Recognised sustainable leadership Proudly B-Corp certified and a leader in sustainable skincare since the beginning.

  • Formulated with purpose Every ingredient serves a function. No fluff. No fillers.

  • 100% developed & produced in-house Total control. Total transparency. Built to our standards—never outsourced.

READ ABOUT US

Overall product rating out of 5: 4.49
Based on 1,220 reviews
Write Review
Melanie M
London, GB
I recommend this product
Skin type:
Combination
Glow-C Vitamin C 20% Serum
Reviewer didn't leave any comments
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6 days ago
Andrew J
Mannheim, DE
I recommend this product
Skin type:
Combination
Glow-C Vitamin C 20% Serum
Reviewer didn't leave any comments
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7 days ago
Samya s
Romford, GB
I recommend this product
Glow-C Vitamin C 20% Serum
Excellent product
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24 days ago
Yvonne P
Spalding, GB
I recommend this product
Skin type:
Mature
Glow-C Vitamin C 20% Serum
It feels so nice and gives a warm feeling when using. I have noticed my skin is more hydrated and soft
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1 month ago
Nicole G
Bo'ness, United Kingdom
I recommend this product
Skin type:
Dry
Glow-C Vitamin C 20% Serum
I love this vitamin C it doesn’t make my sensitive skin flare up? Use it daily under moisturiser and sunscreen, does okay under makeup but it has an oily texture, so you may want to avoid if you have dry skin.
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2 months ago
Claire E
Birmingham, GB
I recommend this product
Skin type:
Dehydrated
Glow-C Vitamin C 20% Serum
My skin is quite dry so this has helped out massively. Doesn't take to long to soak in and great for my skin routine
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2 months ago
Khoudjey D
Sarcelles, France
I recommend this product
Skin type:
Oily, Dehydrated
Glow-C Vitamin C 20% Serum
Très bon produit ne colle pas à voir les effets sur le long terme
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2 months ago
Wilson O
Cobourg, Canada
I recommend this product
Skin type:
Combination
Glow-C Vitamin C 20% Serum
Perfect serum, very soothing
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2 months ago
Susan D
Waterford, Ireland
Skin type:
Mature
Glow-C Vitamin C 20% Serum
Reviewer didn't leave any comments
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2 months ago
Katherine G
Blairgowrie, United Kingdom
I recommend this product
Skin type:
Mature
Glow-C Vitamin C 20% Serum
I have been using this for a while now and I love it for the way it brightens my complexion and makes me look really healthy.
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2 months ago
Anonymous
I recommend this product
Skin type:
Oily
Glow-C Vitamin C 20% Serum
The consistency is more liquid than the previous formula, but I like it! My acne scars and spots are visibly better after a week of use, I recommend it :)
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2 months ago
Susanne G
Stockport, United Kingdom
Skin type:
Mature
Glow-C Vitamin C 20% Serum
This serum is easy to apply and quickly absorbs into the skin. I am using it daily and hope to see an improvement in my skin.
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2 months ago
Irene A
Parma, Italy
Skin type:
Mature
Glow-C Vitamin C 20% Serum
la consistenza troppo oleosa
Reply:
Ciao Irene, Grazie per il tuo feedback sul siero Glow-C Vitamin C 20%. Ci dispiace che la consistenza ti sia sembrata troppo oleosa. La nostra politica sui resi ti offre la massima tranquillità quando provi Facetheory. Se, per qualche motivo, non sei completamente soddisfatto di un acquisto Facetheory e non noti alcun miglioramento visibile sulla tua pelle entro 365 giorni, inviaci un'e-mail all'indirizzo help@facetheory.com per una sostituzione gratuita o un rimborso. Grazie Team Facetheory
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2 months ago
Silke
Glow-C Vitamin C 20% Serum
Endlich mein Vitamin C gefunden! Absoluter Game Changer!
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3 months ago
Isabel I
Vila do Conde, Portugal
I recommend this product
Skin type:
Combination
Glow-C Vitamin C 20% Serum
Reviewer didn't leave any comments
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3 months ago
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