Medik8 Super C30 review: the effective and affordable vitamin C serum

Medik8 Super C30 is a vitamin C serum that goes above and beyond but remains relatively affordable.

Medik8 super c30 serum review
(Image credit: Medik8)
My Imperfect Life Verdict

This powerful serum restores a youthful glow. It’s suitable for most skin types and ages.

Reasons to buy
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    Formulated with 30% ethylated L-ascorbic acid making it potent yet gentle

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    Added vitamin E and grapefruit extract for extra antioxidant protection

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    Cruelty free, suitable for vegans and not tested on animals

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    No artificial fragrance or alcohol

Reasons to avoid
  • -

    The cost - although relatively affordable for the technology it could still be considered expensive

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    Oil base could be slightly greasy for some people

Medik8 Super C30 is one of three vitamin C serums created by the brand; it falls in the middle of C-Tetra, which is a more gentle formula, and Super C30 Intense, a seriously amped up version of Super C30. 

Super C30 is a high strength, stable vitamin C serum that utilises the power of ethylated ascorbic acid – a type of vitamin C that is much more stable than some of its counterparts, therefore meaning it will remain at the same potency level while you work your way through the bottle. 

Alongside ethylated ascorbic acid is vitamin E which protects against free radicals, turmeric extract that gives a bright, even skin tone, geranium extract that gives a subtly sweet smell as well as helping to balance skin, plus grapefruit extract which rejuvenates the skin and acts as additional antioxidant protection. 

This serum came out as best in class when compared with similar vitamin C products thanks to the formula, its efficacy, the price point and ease of use. 


Medik8 Super C30 costs £44 for a 30ml bottle and can be bought from different retailers, including directly from Unfortunately, Medik8 rarely offers discounts on products, but keep an eye out for deals – it last had a 20% off code that was available via Caroline Hirons to celebrate her latest skincare box. However, beauty sites Cult Beauty and Feel Unique often have discount codes available, so you might be able to grab a bargain there!

The bottle

One of the most important things to consider when it comes to buying a vitamin C serum – aside from the ingredients, of course – is the bottle. Vitamin C is extremely difficult to formulate with because it’s so unstable, but it can also react to both light and air which, in some cases (mostly dependent on the formula) can render it ineffective. So the brown bottle that houses Medik8’s Super C30 may not seem special, but actually it acts as a filter against UV lights, helping to protect the formula and stops it from degrading. That means the serum will stay just as effective as the first time you used it to ensure maximum results.  

The formula

There are many cutting edge vitamin c serums [LINK TO T1 BG GUIDE ONCE LIVE] on the market these days and they range in price. However, what we love about Super C30 is that it combines really hardworking, powerhouse ingredients with a relatively affordable price. Medik8 is a brand that’s passionate about creating effective, clinically proven products and this product is a prime example of that. The formula harnesses the power of 30% ethylated ascorbic acid (which has the efficacy of pure vitamin C without any of the stability issues) and pairs it with vitamin E to protect skin against both environmental and sun-induced damage. It also features turmeric root that adds extra glow, along with both grapefruit and geranium extract, both of which are natural and have added anti-ageing and antioxidant benefits, as well as giving the serum a subtle, zesty scent. There are no filler ingredients - instead it’s bursting with effective and efficient ingredients that work together to leave skin glowing.

The texture

Most serums tend to be water-based, but because vitamin C is highly unstable, it’s not always possible to include water within the ingredients. That means most vitamin C serums are usually oil-based formulas, and Super C30 is included in that. However, we found it wasn’t overly greasy and it absorbed quickly into skin thanks to the dry oil-esque texture that it has.

Ease of use

Super C30 is a 30ml bottle that comes with a dropper function in the lid. That means it’s easy to use the lid to squeeze the serum up into the pipette and then dispense a couple of drops into the palm of your hand. We found the serum was best applied gently pressed into the skin rather than rubbing it in like a cream. Although oil-based and despite feeling a little greasy when first used, the serum absorbs into skin quickly and is dry to the touch within seconds. We found it best applied onto cleansed skin. We also preferred to wait a few minutes before applying anything on top just to ensure the serum had fully absorbed. There were no issues in terms of pilling when applying sunscreen or foundation directly on top of the serum.

Overall results

The overall results were impressive, and with daily and continued use the serum did have a major positive impact in terms of radiance, tone and general appearance. When combined with SPF30 during the day and a vitamin A (retinol) product at night, it really clears up skin and gives it a completely new lease of life. 

Medik8 Super C30 summary

In summary, Super C30 from Medik8 is one of the best vitamin C serums that money can buy. Created by true experts in their field, this serum is highly efficient and the fact it contains 30% ethylated ascorbic acid means it is extremely potent, and therefore unrivalled in its effectiveness, which makes it a real market leader. If you’re looking for brighter, more even skin, plus unrivalled protection against pollution, damaging free radicals, UV and other environmental factors, then this is the product to use. Gentle enough to use every day, it absorbs quickly when applied onto cleansed skin and sits perfectly well under both SPF and make-up without causing foundation to slide off or any other disruption. The inclusion of added antioxidant protection in the form of vitamin E makes it work even harder, and the subtle, fresh scent – which comes from natural grapefruit extract – is the icing on the cake. A true powerhouse serum that nobody should be without.