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Average review score: 4.74074 stars out of 5
(270) reviews

Vitamin C Fix Concentrate Extreme 15%

£20.95 £24.95 30ml
Pay in 30 days. Read more
18+, T&C apply, Credit subject to status.
  • Brightening
  • Hydrating
  • Tackles pigmentation
Members earn points on purchase
A next-generation 15% vitamin C complex formulated to protect your skin from free radicals, and visibly brighten and even skin tone.

Powered by a 15% vitamin C complex with three stabilised forms of vitamin C to protect skin from environmental aggressors like UV rays and pollution, this formula visibly brightens and evens skin tone. Clinically proven to significantly improve skin brightness in just 4 weeks.*

This vitamin C complex contains a synergistic, potent blend of three stabilised forms of vitamin C, each with individual benefits. It is supported by other key ingredients such as ferulic acid to boost the effectiveness of the vitamin C, along with allantoin and niacinamide to replenish the skin barrier.

Why use a complex?

Vitamin C's pure form, ascorbic acid, is known to be unstable and highly susceptible to oxidation (resulting in it turning brown) via heat, light, air and water, which impacts its effectiveness. Using more stable derivatives of vitamin C in our formula ensures that rate of oxidation is slowed right down, meaning less discolouration and a longer shelf life, so your skin can get all the amazing benefits of vitamin C for longer.

Clinically tested:

Clinically Proven to significantly improve skin brightness in just 4 weeks*

Clinically Proven to reduce hyperpigmentation by 19.86% in 4 weeks*

Clinically Proven to improve skin tone evenness by 20% in 4 weeks*

Consumer trials:

96% agree skin looks brighter after using the product*

93% would buy the product after trialing it*

90% agree skin looks more radiant after using the product*

84% agree dark spots are reduced*

84% agree it's the most effective Vitamin C product they have ever used*

How it works:

15% vitamin C complex: A supercharged, innovative complex of 3 stabilised forms of vitamin C to ensure a more stable and effective brightening formula.

Ferulic acid: A versatile antioxidant that boosts effectiveness of vitamin C.

Allantoin: Known to help provide hydration to skin.

Niacinamide: Helps to even skin tone and diminishes pore size.

*Independent Clinical Trial Results on 32 Subjects applying 3-4 drops of Nip+Fab Vitamin  C Fix Concentrate twice daily for 30 days.

How to use
Step 2 of your skincare routine – treat.

Can be used daily in the AM – see tips below.

Concentrates are lightweight and usually contain a high concentration of active products. They are best applied straight onto cleansed skin and can be followed with a serum or used alone.

For best results, use as part of a full Vitamin C Fix routine:

Step 1: Cleanse using the Vitamin C Fix Cleanser
Step 2: Follow with the Vitamin C Fix Brightening Pads
Step 3: Apply the Vitamin C Fix Eye Cream 10%
Step 4: Use 2-3 drops of the Vitamin C Fix Concentrate
Step 5: Finish with the Vitamin C Fix Hybrid Gel Cream

Using vitamin C and retinol together is a powerful way to reduce fine lines and wrinkles, but we don’t recommend using them together at the same time, so stick to one in the morning and the other at night; use the Vitamin C Fix Concentrate Extreme 15% in your AM routine and the Retinol Fix Booster in the PM.

Use SPF the morning after – we recommend our Illuminating SPF 30 as the final step in your routine. This SPF was specifically designed to protect and illuminate skin after using Vitamin C Fix.
Aqua/Water/Eau, Sodium Ascorbyl Phosphate, 3-O-Ethyl Ascorbic Acid, Ascorbyl Glucoside, Propanediol, PEG-40 Hydrogenated Castor Oil, Phenoxyethanol, Xanthan Gum, Benzyl Alcohol, Citric Acid, Sodium Citrate, Helianthus Annuus (Sunflower) Seed Oil, Parfum (Fragrance), Ferulic Acid, Niacinamide, Disodium EDTA, Allantoin, Mica, Panthenol, Dehydroacetic Acid, Beta- Carotene, Daucus Carota Sativa (Carrot) Root Extract, Daucus Carota Sativa (Carrot) Seed Oil, Tocopherol, Limonene.

Delivery and Returns

Delivery is always FREE on orders over £25 and takes 1-3 days.
For orders under £25 a flat rate of £3 is charged.

If you need your products quickly, we offer DPD next working day delivery (orders must be placed before 12PM) at a cost of £5.

  • Free delivery on orders over £25
  • Cruelty-free formulas
  • 5,000+ Five Star Reviews

The Science

Ascorbic acid – vitamin C's purest form – is hard to stabilise in an effective formula: when it comes into contact with heat, light, air and water, it starts to oxidise and form dehydroascorbic acid, which is not the active form of the molecule, meaning potency and antioxidant abilities have been compromised. Our upgraded complex stabilises the formula, slowing the oxidation rate right down and making it less likely to destruct. It means we’ve been able to deliver a higher concentration of vitamin C without compromising stability and effectiveness. The higher concentration of vitamin C means that you’ll see brighter, more even-toned skin than ever before, and the stable formula means it’s long-lasting, both in terms of efficacy on skin and shelf-life duration.

Why you need it

Our next generation Vitamin C formula tackles multiple skin concerns in one bottle. Whether you're looking to even out your skin tone, fade marks or reduce signs of ageing, do it all while keeping your skin hydrated and plump with this high performance concentrate.

The 15% Vitamin C Complex

  • Stay-C® 50

    Has a proven conversion into ascorbic acid - vitamin C's purest form - once it has penetrated the skin's surface and is the only derivative with a use level of up to 15%.

  • L-VCG

    Is metabolised into ascorbic acid more gradually on contact with the skin compared to other derivatives, giving it a unique time-released effect - you'll experience the benefits for longer. It is also more resistant to discolouration, prolonging shelf life.

  • Specwhite VCE

    An ethered derivative, meaning it is both water-loving and oil-loving, which results in better skin penetration compared to pure ascorbic acid.

15% Vitamin C complex

Potent, next-generation 15% complex with three stabilised forms of vitamin C, each with its own supercharged benefit.

Ferulic acid

Ferulic acid, a phyto-chemical antioxidant, is included in the formula to boost the effectiveness of vitamin C.


Known to decrease transepidermal water loss, panthenol is included to deeply hydrate the skin, essential for a healthy complexion.

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