Original Pure Vitamin C20 Serum Review

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Hey babes,

Today, I’m writing about a product that’s absolutely essential to my skincare routine! I’ve used this Vitamin C serum on and off for a few years now (on and off solely due to $$$) and it’s definitely a product I would recommend to ANYONE seeking to even out their skin tone. If you don’t use a Vit C serum, are you really living? Just kidding, but really. You need one.

ost c20 vitamin c serum nz review

First, lemme touch on the many benefits of Vit C on the skin. According to this peer-reviewed journal article, Vit C can: provide some photoprotection, boost collagen production, protect skin from free radicals, and be an anti-inflammatory. I feel like there’s almost nothing Vit C can’t do – lighten existing dark marks, prevent more from occurring, prevent photoaging… It literally does it all and that’s exactly why I adore this product so much and why I use it so diligently.

The C20 serum packs a punch with 20% Vit C. However, the only drawback of using such a high percentage of the most unstable form of Vit C (known as L-AA) is that it can oxidise QUICKLY. Oxidising affects the appearance of the product – the darker the product is, the more oxidised it has become. The jury is out on whether or not using oxidised Vit C is actually harmful, but you’re definitely not able to reap its full benefits.

kbeauty ost c20 whitening serum nz

Even though the serum already comes in a darkened bottle to prevent oxidisation from light, I still keep it in the box in the fridge – I’m already halfway through this bottle and it’s just as clear and light as it was when I first opened it. Another little trick I used to try and minimise oxidisation is avoiding blowing bubbles in the bottle using the applicator. As soon as I’ve dispensed the dropper into my palm, I don’t release it until it’s back in the bottle again. I don’t know if there’s any real science to this but not blowing oxygen back into the product has gotta help, right?

However, this also means that the serum is definitely not travel friendly unless you have a fridge at your destination to throw this into. I’ve literally gone places for the weekend and brought this in it’s box and found that it’s oxidised slightly over two days of not being in a fridge.

whitening ost c20 serum review nz

The serum has a really light texture, but definitely not as light as water. It spreads easily without being runny, and I find one dropperful is enough for my entire face. I find it best to use it first thing in the morning after washing my face. When I first started using it, I remember feeling a light tingle – that’s totally normal. Because the product is so strong, it’s best to start using it every other day, or even every second day before working up to daily use.

nz review whitening ost c20 serum

The only caveat I have is that ethanol features high on the ingredients list – while my skin can tolerate it, if yours cannot I recommend purchasing the C21.5 Serum*. It has a much simpler ingredients list and is alcohol-free. Below is the full ingredients list for C20 Serum:

Water, Ascorbic Acid, Ethanol, Sodium Lactate, Butylene Glycol, Glucose, Camellia Sinensis Leaf Extract, Rosa Davurica Bud Extract, Carthamus Tinctorius (Safflower) Flower Extract, PEG-60 Hydrogenated Castor Oil, Sodium Hyaluronate, Bis-PEG-18 Methyl Ether Dimethyl Silane, Diethoxyethyl Succinate, Ammonium Acryloyldimethyltaurate/VP Copolymer, Xanthan, PEG-180, Gluconolactone, Beta-Glucan, Citrus Aurantium Dulcis (Orange) Oil, Zinc PCA, Panthenol, Niacinamide, Glycerin, Tocopheryl Acetate, Lecithin, Caprylic/Capric Triglyceride, Ubiquinone, Diisopropyl Adipate, Phenoxyethanol, Methylparaben

Without going into too much detail and writing a full-on 2,000 word essay, the rest of the ingredients list IS fairly impressive and provides a slew of other benefits for the skin.

I can’t recommend this serum enough! It’s affordable and easily available. I rate it 4.5/5.

Have you tried Vit C serums before? What’s your favourite?

Lexie xx
rating scale 1 – Terrible: Negative effects on skin.
2 – Mediocre: No change in skin/claims not met.
3 – Average: Not amazing, but not terrible.
4 – Good: Would repurchase unless I try something better.
5 – Amazing: Meets trifecta of perfect packaging, formula, & cost.

where to buy
WishTrend*

purchased / contains affiliate links*

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