Antioxidants formula on steroids

Power up your skin's radiance with the best Vitamin C serum. Formulated with a high concentration of 20% L-ascorbic acid, Ferulic acid, and Vitamin E (tocopherol) at a low pH. This clinical formula guarantees serum penetration, antioxidant efficacy and stability.Heads up! It may cause a slight tingling sensation at first!

Expected Formulation Results:

  • Skin brightening and even tone by regulating melanocytes
  • Improve firmness by reducing free radicaldamage to collagen & elastic damage
  • Reduce skin inflammation and strength skin barrier

Skin type: Normal, Oily Skin

Skin Concerns: Skin ageing, uneven tone, skin spots, sensitive skin, skin barrier repair

Limited Time Offer: Buy Revitalise C20 and get Exfoliate for Free

(7 customer reviews)

£ 90.00 £ 65.00

A 30-second foaming facial that instantly brightens skin and tightens pores with 20% vitamin C.

Recommended By CosmeDocs (Cosmetic Doctors) Clinic Harley Street | Free Shipping over £50 | Potent Targeted Cosmeceuticals

Vitamin C Advice

Antioxidant neutralise skin oxidants (free radicals) that form due to sunlight, pollution, smoking and even normal biological ageing. The Majority of facial ageing is photoaging (sun damage) and movement (expressions). L-ascorbic acid is the most well studied antioxidant in clinical research.

Vitamin C antioxidant serum also optimises the function of all the cells in the skin by preventing free radical damage. This helps :

  • Melanoctyes: even skin tone by regulating production
  • Keratinocytes (skin cells): strengthen skin barrier
  • Fibroblasts: Produce collagen, elastin, hyaluronic acid.

Newer studies have revealed that reapplying vitamin c serumin in the afternoon helps to build up a high concentration of antioxidant in the skin, creating a reservoir for future protection.

Ferric can turn yellow, normal
Ferulic can turn yellow, normal

Key Formulation Benefits


Benefits of adding ferulic acid + vitamin e

  • Enhanced antioxidant protection
  • Increased stability & longevity of L-ascorbic acid
  • Improved penetration and absorption of active ingredients
  • Brightening and anti-aging benefits


Benefits of adding niacinamide

Niacinamide, also known as Vitamin B3, is loaded with multiple benefits for the skin. It has been added to Revitalise C20 Vitamin C skin serum.

  • Improves skin barrier function & prevents moisture loss
  • Regulates sebum production & minimises pore size
  • Reduces and prevents skin inflammation (Ideal for sensitive or acne-prone skin.

Formulation Science

Active Ingredient(s)

  • 20% l-ascorbic acid
  • Ferulic acid
  • Vitamin E (Tocopherol )

Supporting ingredients

  • Niacinamide
  • Hyaluronic acid

Serum Base

  • ph : 3.0-3.5 stabilised l-ascorbic acid
  • Colour : clear to slight yellow (due to ferulic)
  • Smell : as with ferulic a woody scent free of any fragrance

Glycerin, Purified Water (Aqua), Ethoxydiglycol, L-Ascorbic Acid, Butylene Glycol, Laureth-23,Tocopherol, Ferulic Acid, Panthenol, TEA, Hyaluronic Acid, Sodium PCA, Niacinamide, Phenoxyethanol.

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Tips & Suggestions

In the morning, apply SPF to increase sun protection after using the best Vitamin C antioxidant serum, Revitalise C20, when heading outdoors. Sun protection factor (SPF) provides no benefits indoors or away from a window, making the application of unnecessary chemicals avoidable.

Due to the high concentration of ferulic acid (more than other similar formulations), the serum’s colour is naturally slightly yellow.

How To Apply


Place 4 to 5 drops into the palm, using fingers on the other hand, smooth evenly over the entire face and neck. Allow serum to penetrate before applying another product. Use in the morning after cleansing before your sunscreen application.

Before & After


Early Impairment Of Skin
Barrier Function

Early Erythema (Inflammation)
Uneven Skin Colour
Rough Texture
Increased Sebum (oil)


Skin Barrier Function
and Vitality

  • No Erythema
  • Not Sensitive
  • Smooth Texture
  • Even Colour
  • Well Hydrated
  • Congestion Free
  • Oil Controlled

Works Well With

Retinoid Cream


Dual Vitamin A Cream

Retinol is a form of vitamin A that has been shown to improve skin texture, reduce the appearance of fine lines and wrinkles, and increase collagen production. It also helps to unclog pores, which can reduce the risk of acne breakouts.

For daily skincare, it is recommended to use a concentration of retinol between 0.3% and 1%. However, retinol can cause skin irritation, especially in the early stages of use, so it’s important to start with a lower concentration and gradually increase as tolerated.

Learn More


  1. Rated 5 out of 5

    My new holy grail serum!

    I have been using this serum for over a month now and I can safely say that it is by far the most effective vitamin C serum out there! Love the fact how lightweight and non-greasy this serum is – it sinks into my skin really quickly.
    I have also paired it with their retinol cream for my nighttime skincare routine. Obsessed? Yes.

  2. Rated 5 out of 5

    Have been using this product for a number of years now – it’s very easy to apply and has become a solid part of my morning routine. I think it’s great for evening out skin tone and combating the effects of too much sun. I often get compliments on my skin. Planning on making this a permanent part of my skincare set up.

  3. Rated 5 out of 5

    Best product! I have acne prone skin and this is the best for sensitive skin. I use it everyday as part of my daily routine

  4. Rated 5 out of 5

    I’ve been using this product for about a year now and I cannot imagine my skincare routine without it! It gives my skin an amazing glow which is perfect before I apply my makeup, however, gives it also me confident boost on my makeup free days! It has evened out my skin tone and another thing I love about this is that a little bit goes a long way so it is definitely worth the price because it lasts a long time. I will keep buying this product and I hope it never gets discontinued as I genuinely cannot imagine my life without it now – absolute game changer.

  5. Rated 5 out of 5

    Revitalize C20 is my all time favorite product from the range of HSF. I must say it is worth buying and it’s results are amazing. My uneven skin tone and sun spots have vanished with the use of this serum. I will keep using this product as my skin tone is getting better day by day. I would highly recommend this product to all those who want to improve their skin barrier, sensitive skin and uneven skin tone.

  6. Rated 5 out of 5

    Amazing product fixed my sensitized skin. I researched on skin barrier repair and chose to start with a vitamin c. It stings a bit in the beginning but within 3 weeks skin feel better and less sensitive skin. The product no longer stings. I only apply 7-8 drops in the morning.

  7. Rated 5 out of 5

    I love this product after been using it 2 weeks. I was deciding between this and the CEFerulic by SkinCeuticals but chose this for three reasons over the CEFerulic. Higher vitamin c, more ferulic and less cost.

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In preparation for the next post some anatomy revision…

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Illustration by Elena
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Many of these concepts apply to all medical professionals. Must read for all medical practitioners.

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