BBy Bikram Nath·Researched from UK Amazon listings·Updated 2026-10-16·6 products compared
Disclosure: As an Amazon Associate I earn from qualifying purchases. This guide contains Amazon affiliate links, and we may earn a commission — at no extra cost to you — but it never changes our rankings.
What are the best vitamin c serums to buy in the UK?
Our top pick for Vitamin C Serums in the UK is the Minimalist 10% Vitamin C Face Serum.
The Minimalist 10% Vitamin C Face Serum suits buyers who want a fragrance-free vitamin C serum for oily, dry, sensitive or combination skin, with 10% Ethyl Ascorbic Acid and a stated pH of 3.9 - 4.9.
The Minimalist 10% Vitamin C Face Serum is our top pick among vitamin C serums because its listing states the vitamin C form (10% Ethyl Ascorbic Acid), a pH of 3.9 - 4.9, a fragrance-free formula and suitability for all skin types, oily skin included. For pure L-ascorbic acid, the Dr. Brenner serum lists 20% L-Ascorbic acid with ferulic acid, vitamin E and hyaluronic acid; for hyperpigmentation, The INKEY List 15% Vitamin C and EGF Serum says it is formulated to reduce the appearance of hyperpigmentation.
This guide compares six serums from Minimalist, Dr. Brenner, The INKEY List, Garnier, Geek & Gorgeous and VLCC, using what each listing states: the form of vitamin C, its concentration, the other actives, the skin types named and any free-from claims or approvals. Stated vitamin C concentrations run from 4% on the Garnier to 20% on the Dr. Brenner.
Buying guide
What should you look for in Vitamin C Serums?
1Vitamin C form: the Dr. Brenner listing states pure L-Ascorbic acid and the Geek & Gorgeous listing pure Vitamin C (or Ascorbic Acid); the Minimalist uses Ethyl Ascorbic Acid, which its listing calls a stable Vitamin C derivative, and The INKEY List uses Ascorbyl Glucoside. The Garnier and VLCC listings do not name the form of vitamin C in the features we read.
2Concentration: the listings state 20% (Dr. Brenner), 15% (The INKEY List, Geek & Gorgeous and VLCC), 10% (Minimalist) and 4% (Garnier, in its title).
3Other actives: the Dr. Brenner lists ferulic acid, vitamin E and hyaluronic acid; the VLCC ferulic acid and hyaluronic acid; the Geek & Gorgeous ferulic acid and a smaller amount of vitamin E; the Garnier Melasyl, niacinamide and salicylic acid; The INKEY List the peptide EGF; the Minimalist Centella water and 1% Acetyl Glucosamine.
4Skin type: the Minimalist listing names oily, dry, sensitive and combination skin, and the Garnier title says suitable for sensitive skin. The INKEY List and Geek & Gorgeous say all skin types, but Geek & Gorgeous does not recommend its serum for sensitive, redness-prone skin because of its low pH and high pure acid content. The Dr. Brenner and VLCC listings name no skin types.
5Free-from claims and approvals: the Minimalist lists fragrance, silicones, sulfates, parabens, essential oils and dyes as absent; The INKEY List says fragrance-free and cruelty-free; the Garnier says Leaping Bunny approved by Cruelty Free International and vegan. The Dr. Brenner, Geek & Gorgeous and VLCC listings make no free-from claim in the features we read.
Our process
How do we choose our picks?
We don’t lab-test products ourselves. Instead we synthesise current Amazon UK listings and published specs into clear, honest recommendations. We earn a commission if you buy through our links, but that never changes which products we rank.
Current UK availability
We check each pick against live Amazon UK catalogue data rather than last year’s model lists. Stock moves fast, so a listing can sell out after we publish.
Published specs
We compare manufacturer specifications so each pick is right for a real budget and use-case.
UK-specific fit
We factor in UK voltage and plug/fitting standards — details that generic global lists miss.
10% Ethyl Ascorbic Acid (a stable Vitamin C derivative, per listing)
Pure L-Ascorbic acid
15% Ascorbyl Glucoside (a stable form of vitamin C, per listing)
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Pure Vitamin C (Ascorbic Acid)
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Skin Types
All skin types, including oily, dry, sensitive and combination (per listing)
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All skin types, especially those with hyperpigmentation (per listing)
Suitable for sensitive skin (title)
All skin types (title); not recommended for sensitive, redness-prone skin (per listing)
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The rankings
The best Vitamin C Serums, ranked
1
Minimalist
Top Pick
Minimalist 10% Vitamin C Face Serum
The Minimalist 10% Vitamin C Face Serum suits buyers who want a fragrance-free vitamin C serum for oily, dry, sensitive or combination skin, with 10% Ethyl Ascorbic Acid and a stated pH of 3.9 - 4.9.
Vitamin C Form
10% Ethyl Ascorbic Acid (a stable Vitamin C derivative, per listing)
Concentration
10%
Size
1 Fl Oz / 30 ml
Other Actives
Centella water; 1% Acetyl Glucosamine
Skin Types
All skin types, including oily, dry, sensitive and combination (per listing)
Free From
Fragrance, silicones, sulfates, parabens, essential oils and dyes
Acidity
pH 3.9 - 4.9
What we like
+States a pH of 3.9 - 4.9
+Lists six free-froms and says it is non-comedogenic and oil-free
+Names oily, dry, sensitive and combination skin among the skin types it suits
+Gives directions: 2-3 drops after cleansing and toning, AM and PM
Worth noting
–Uses a vitamin C derivative (Ethyl Ascorbic Acid), not L-Ascorbic acid, per the listing
–The listing states no shelf life after opening
£11.80Amazon.co.uk price as of 03 Nov, 12:00 (London time). Details
Dr. Brenner Vitamin C Serum 20% Pure L-Ascorbic Acid with Ferulic Acid, Vitamin E and Hyaluronic Acid
The Dr. Brenner Vitamin C Serum suits buyers who want a high stated strength of pure L-Ascorbic acid (20%) with ferulic acid, vitamin E and hyaluronic acid, for face and eyes, per the listing.
Vitamin C Form
Pure L-Ascorbic acid
Concentration
20%
Size
1oz
Other Actives
Ferulic acid, vitamin E and hyaluronic acid
Freshness
Made every two (2) weeks, per listing
Satisfaction Promise
60 days
What we like
+States 20% pure L-Ascorbic acid
+Combines ferulic acid, vitamin E and hyaluronic acid, per the listing
+The listing says each batch is made every two weeks
+A 60-day satisfaction promise is stated
Worth noting
–The listing names no skin types and gives no pH
–The listing gives no directions for use
View on Amazon UKAmazon UK shows no offer for this product as of 03 Nov, 12:00 (London time). Details
3
The INKEY List
The INKEY List 15% Vitamin C and EGF Serum
The INKEY List 15% Vitamin C and EGF Serum suits buyers focused on hyperpigmentation who want a fragrance-free serum with 15% Ascorbyl Glucoside and EGF, per the listing.
Vitamin C Form
15% Ascorbyl Glucoside (a stable form of vitamin C, per listing)
Concentration
15%
Size
30ml
Other Actives
Plant-based peptide Epidermal Growth Factor (EGF)
Skin Types
All skin types, especially those with hyperpigmentation (per listing)
Free From
Fragrance (the listing also says cruelty-free)
What we like
+The listing says it is formulated to reduce the appearance of hyperpigmentation
+Fragrance-free and cruelty-free, per the listing
+Can be used AM and PM; AM is recommended if used once a day
+Advises using it on a different night to Retinol and AHA exfoliators
Worth noting
–The listing advises waiting around 10 minutes before applying other products
–The listing gives no pH
£12.00£15.99−25%Amazon.co.uk price as of 03 Nov, 12:00 (London time). Details
Garnier Vitamin C Serum for Face, Brightening & Anti Dark Spots, 30ml
The Garnier Vitamin C Serum suits buyers who want a dark-spot serum that combines 4% vitamin C with niacinamide, salicylic acid and Melasyl, carries Leaping Bunny approval and is described as suitable for sensitive skin.
Concentration
4% (stated in the title)
Size
30ml
Other Actives
Melasyl, niacinamide and salicylic acid
Skin Types
Suitable for sensitive skin (title)
Approval
Leaping Bunny Approved by Cruelty Free International; vegan
What we like
+Garnier says its Melasyl active is designed to target dark spots & discolouration
+The title says suitable for sensitive skin
+Leaping Bunny approved and vegan, per the listing
+Described as lightweight and non-greasy for layering under SPF or makeup
Worth noting
–The listing does not name the form of vitamin C
–The listing gives no pH and no directions for how often to apply it
£9.00£13.00−31%Amazon.co.uk price as of 03 Nov, 12:00 (London time). Details
Geek & Gorgeous 101 C-Glow 15% Vitamin C Serum, 30ml
The Geek & Gorgeous 101 C-Glow suits buyers without sensitive skin who want 15% pure ascorbic acid with ferulic acid and vitamin E in a water-light texture.
Vitamin C Form
Pure Vitamin C (Ascorbic Acid)
Concentration
15%
Size
30ml
Other Actives
Ferulic acid and a smaller amount of vitamin E
Skin Types
All skin types (title); not recommended for sensitive, redness-prone skin (per listing)
What we like
+States 15% pure vitamin C (ascorbic acid)
+Described as a super-light, water-like formula
+Adds ferulic acid and vitamin E as extra antioxidants, per the listing
Worth noting
–Geek & Gorgeous does not recommend it for sensitive, redness-prone skin because of its low pH and high pure acid content
–The listing gives no pH figure and no directions for use
£11.88Amazon.co.uk price as of 03 Nov, 12:00 (London time). Details
Product prices and availability are accurate as of 03 Nov, 12:00 (London time) and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.
Editor's Note
These listings state concentrations and actives, but only the Minimalist gives a pH figure (3.9 - 4.9), and the Garnier and VLCC listings do not say which form of vitamin C they use. None of the six states a shelf life after opening; the Dr. Brenner listing says the serum is made every two weeks.
Our Take
The Minimalist 10% Vitamin C Face Serum is the default pick for its stated pH, free-from list and all-skin-type guidance. Choose the Dr. Brenner for 20% L-Ascorbic acid with hyaluronic acid, or The INKEY List 15% Vitamin C and EGF Serum if hyperpigmentation is the reason you are buying.
Questions & answers
Frequently asked questions
Which vitamin C serums use pure ascorbic acid?
The Dr. Brenner Vitamin C Serum states 20% pure L-Ascorbic acid, and the Geek & Gorgeous 101 C-Glow states 15% pure Vitamin C (or Ascorbic Acid). The Minimalist uses Ethyl Ascorbic Acid and The INKEY List uses Ascorbyl Glucoside instead.
Which vitamin C serum is listed for hyperpigmentation?
The INKEY List 15% Vitamin C and EGF Serum says it is formulated to reduce the appearance of hyperpigmentation and is suitable especially for skin with hyperpigmentation. Garnier says its Melasyl active is designed to target dark spots & discolouration.
Which vitamin C serum suits oily skin?
The Minimalist 10% Vitamin C Face Serum names oily skin among the skin types it suits and says it is oil-free and non-comedogenic. Its listing also gives a pH of 3.9 - 4.9 and directions of 2-3 drops morning and evening.
What strength is the Dr. Brenner vitamin C serum?
The Dr. Brenner Vitamin C Serum states 20% pure L-Ascorbic acid in a 1oz bottle, with ferulic acid, vitamin E and hyaluronic acid. The listing says it is made fresh every two weeks and offers a 60-day satisfaction promise.
Which vitamin C serums also contain hyaluronic acid?
The Dr. Brenner Vitamin C Serum and the VLCC Vitamin C Serum Glow Boost both name hyaluronic acid alongside ferulic acid. The other four serums in this guide do not list hyaluronic acid in the features we read.
Can vitamin C serum be used on sensitive skin?
The Garnier Vitamin C Serum title says suitable for sensitive skin, and the Minimalist listing says its Centella water makes it suitable for sensitive skin. Geek & Gorgeous does not recommend its 101 C-Glow for sensitive, redness-prone skin because of its low pH and high pure acid content.
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