All You Need To Know About Vitamin C

Without doubt one of the hardest-working ingredients in skincare, Vitamin C has long been recognised for the great work it does in protecting, correcting, and perfecting the skin.

What is Vitamin C?

Also known as Ascorbic Acid, L-Ascorbic Acid, or L-Ascorbate, Vitamin C is an organic compound and powerful antioxidant that is considered a vital ingredient for optimal health, including the health of your skin and the way it responds to daily stressors. Vitamin C is not stored in the body which is why we need to obtain it from the food we eat, the supplements we take, and the skincare we use to reap the benefits.


What Does Vitamin C Do For The Skin?

Also known as L-Ascorbic Acid, Vitamin C is a powerful multi-tasker when it comes to its ability to protect, correct and perfect the skin. Here are just a few of its many skin benefits:

  • Vitamin C is a great skin protector, defending skin cells against oxidative damage caused by free radicals and environmental aggressors such as pollution

  • A potent antioxidant, it also protects against the harmful effects of UV exposure and has been shown to help reduce sunburn

  • A powerful anti-inflammatory, Vitamin C soothes and calms reactive skins prone to inflammation

  • It’s essential for the synthesis of Collagen (which naturally slows with age) so when incorporated into your skincare routine, Vitamin C can significantly improve skin texture, fine lines, wrinkles, and loss of elasticity in the skin.

  • It’s a proven performer when it comes to boosting skin clarity, evening out skin tone, and boosting natural radiance.

  • Vitamin C is particularly beneficial to skins suffering from acne scarring, melasma, and hyperpigmentation as it works to improve both the tone and texture of the skin.

What is The Best Form of Vitamin C to Use?

A highly volatile ingredient sensitive to air and light, Vitamin C comes in many forms. When it comes to skincare, L-Ascorbic Acid is widely considered the most stable and the most effective at penetrating the skin’s barrier. Which is why we’ve based our best-selling  Vitamin C 100% on L-Ascorbic Acid. In fact, this is Vitamin C in its purest powder form—nothing more, nothing less— which not only ensures that it remains stable over time but that it’s as effective as Vitamin C can be. L-Ascorbic Acid is water soluble so you can’t put  our Vitamin C 100% directly on the skin; it needs to be mixed in with another product, like a moisturiser, serum, or mask in order to be easily absorbed and to do its best work. Vitamin C plays well with others, particularly Vitamin E, and together they truly dial up your antioxidant protection.

If you have sensitive skin or suffer from acne, Sodium Ascrobyl Phosphate is another Vitamin C derivative that delivers the same antioxidant benefits but without the potential irritation that some skins experience when using L-Ascorbic Acid. A key ingredient in our hydrating Multi-Active Mist, Sodium Ascrobyl Phosphate is a stable, water-soluble, and gentle form of Vitamin C that waits to convert into L-Ascorbic Acid once it is absorbed by the skin.

How Can I Incorporate Vitamin C into My Routine?

Easily. We’ve heroed Vitamin C in a number of our Skinstitut products as we’re such big believers in the way it can help to transform your skin. You can find Vitamin C in the following:

Did you know that you can now post a review for any of your favourite products on our website? Just jump onto the product page and scroll all the way down and you’ll see the link to help you get started.

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07/09/2025
Sam
Australia
Great products
Glycolic Scrub 14%
05/09/2025
ANASTASIA
Australia
Superfast delivery and great product. Thank you
L-Lactic Cleanser
05/09/2025
Virginia
Australia
I absolutely love all my projects and nearly ready to by more thank you
Multi-Active Oil
02/09/2025
Kathryn M.
Australia
Great product for aged skin
Moisture Defence – Ultra Dry Skin
01/09/2025
Mandy K.
Australia
My skin is feeling fresh and less dull
Retinol Serum
01/09/2025
Lyn S.
Australia
This is a fantastic product. I have been using it for a couple of years now. It’s affordable, a bargain really! My skin is seriously sun damaged, with sola keratosis across my cheeks, that feels scaly and rough. I do have my skin checked every ) months just in case. This mask helps my skin to feel...This is a fantastic product. I have been using it for a couple of years now. It’s affordable, a bargain really! My skin is seriously sun damaged, with sola keratosis across my cheeks, that feels scaly and rough. I do have my skin checked every ) months just in case. This mask helps my skin to feel more comfortable, it gently exfoliates leaving my skin feeling a lot smoother. I would be lost without it.
Enzymatic Micro Peel
01/09/2025
Machallie
Twice daily. Perfect product
L-Lactic Cleanser
01/09/2025
Machallie
Australia
Staple in my skin regime
Rejuvenate 15 Serum
01/09/2025
Machallie
Australia
Worth the investment.
Expert Restore Niacinamide Replenishing Cream
26/08/2025
Tammy’s
Australia
Love it, smooth none greasy
Age Defence SPF 50+
21/08/2025
Elisabeth
Australia
Great night cream and nice smells. I love this product and this is my second jar. makes my skin feel smooth and firm.
Expert Restore Niacinamide Replenishing Cream
21/08/2025
Anne
United States
Love this product
Expert Replenish Squalane Cleansing Oil
18/08/2025
Gaylene
United States
Love it all, skin is so much brighter with the mask and the cleansing gel is so great for my mature skin
Multi-Active Mist
17/08/2025
Elisha
United Kingdom
I never realised how good this powder was until I stopped using it Finally got a new one day and along with the serum my face felt renewed
Vitamin C 100%
17/08/2025
Elisha
United Kingdom
I wasn’t able to book in a hydra facial at short notice so decided to buy additional items from this range First time using this product and it had sold out in the Stratford store so I purchased the Active Icons Renew & Glow just which had a 50ml tube inside I wasn’t disappointed and will...I wasn’t able to book in a hydra facial at short notice so decided to buy additional items from this range First time using this product and it had sold out in the Stratford store so I purchased the Active Icons Renew & Glow just which had a 50ml tube inside I wasn’t disappointed and will definitely purchase again
Glycolic Scrub 14%
17/08/2025
Elisha
United Kingdom
This is by far one of the best face mists that I have used Smells nice and face feels refreshed
Multi-Active Mist
14/08/2025
Jan
United States
Great skin cleanser !!
Glycolic Scrub 14%
14/08/2025
Jan
Australia
Best skin care for mature skin
Expert Restore Niacinamide Replenishing Cream
08/08/2025
Vanessa P.
Australia
I love the way this makes my skin feel, I use morning and night before I moisturise.
1% Hyaluronic Complex Serum
02/08/2025
Nafeesah M.
Australia
Helps with my hormonal acne. I'm not used to acne so we I broke out heavily postpartum, my naturopath recommended this product. My skin has greatly improved since. I used it on my back and face.
Glycolic Scrub 14%
01/08/2025
Mrs K.
Australia
Beautiful moisturiser, I have used it for years and always love how it makes my skin feel moist and plump.
Moisture Defence – Normal Skin
01/08/2025
Debby N.
Australia
This is my daily moisturising product. My skin is dry and very sensitive and the repair balm is so calming and soothing when applied in my daily routine.
Repair Balm
01/08/2025
Meg P.
Australia
Great product. My skin feels amazing
10% Vitamin C Super Serum
01/08/2025
Helene M.
Australia
Amazing product! I have been using it for years & love it!
Vitamin C 100%
01/08/2025
Rebecca M.
Australia
Its beautiful texture , sinks into your skin perfectly 💜
Moisture Defence – Ultra Dry Skin
01/08/2025
Cathy W.
Australia
I have used this product for a while & love it. Only product that does not effect my skin
Moisture Defence – Ultra Dry Skin
01/08/2025
Geraldine D.
Australia
I've been using all 5 of the products in the Discovery pack and I love them all. My skin has improved noticeably and I recommend to all of my friends to try them.
The Edit
16/07/2025
Cassandra
United States
Love love love this product
Hydrating Mask
13/07/2025
Chantelle K.
Australia
Been using skinstitute for years. Never let me down.
1% Hyaluronic Complex Serum
10/07/2025
emmanuella b.
Australia
Works great doesn’t feel weird on the skin and doesn’t feel greasy has helped my skin so much with hydration love it. Also doesn’t make me break out which is a huge problem I’d had with other moisturiser
Moisture Defence – Oily Skin
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