Skincare Holy Grails: The Best Vitamin C Serum Reddit Users Rave About [2021]

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Itching to know what’s the best vitamin C serum Reddit users wholeheartedly recommend? I wanted to find out the same, but instead of getting a clear-cut answer, I discovered that there are a plethora of serums to opt for, with Redditors singing praises to both high-end and cheaper options! 

The question is — would each one of these suggestions be the right option for you? If you’re eager to introduce some juicy vitamin C into your skincare routine, check out the favorites the majority of Reddit users swear by below!

Vitamin C: A Taster of Its Many Benefits

Before discussing the best vitamin C serum Reddit users are raving about, you ought to know why you should even opt for this skincare holy grail. Quality skincare requires some splurging, so you need to know whether a product, such as certain antioxidants like vitamin C, is even essential. 

As always, though, the decision to buy or not to buy mainly comes down to the gorgeous benefits a product offers. In the case of vitamin C serums, these are the greatest ones:

  • Vitamin C helps make the skin more elastic and supple by boosting collagen production. More collagen equals firmer skin that won’t sag so easily as you age.
  • It neutralizes free radicals and thus fights oxidative stress and sun damage. This goes hand in hand with better collagen production, as free radicals make the skin age more rapidly. Due to its antioxidative properties, vitamin C becomes your new best friend — one that keeps you looking youthful and glowy, at that! 
  • Vitamin C also cranks up the hydration. It reduces transepidermal water loss, which allows your skin to retain moisture and stay youthful and plump.

According to Reddit users, one of the best benefits of vitamin C is that it helps fight hyperpigmentation (age spots, melasma, etc.) effectively. Vitamin C serums can reduce dark spots visibly by inhibiting melatonin production. With consistent use, this means you can finally have a more even complexion that requires less makeup daily and makes you feel confident in your own skin!

On top of that, vitamin C serums can help with:

  • Wound healing
  • Under-eye circles
  • Redness
  • Sunburns

The Best Vitamin C Serum Reddit Users Absolutely Love

Fortunately for you, Reddit users don’t just stick to one vitamin C serum that may cost a pretty penny and isn’t available for everyone to buy. Instead, there are many options to pick from, suitable for all budgets — yes, even those that may spare only about $10!

Keep in mind that I may receive commissions when you click my links and make purchases. However, this does not impact my reviews and comparisons. I try my best to keep things fair and balanced, in order to help you make the best choice for you.

1. Timeless Skin Care 20% Vitamin C Serum

According to the online realm, the best vitamin C serum Reddit skincare communities are absolutely in love with is the Timeless Skin Care 20% Vitamin C serum. It’s definitely one of the most talked-about vitamin C serums on Reddit, with users often praising its effectiveness that actually doesn’t come with a steep price tag.

Redditors swear by this product to deliver prompt results and environmental protection with frequent use, tackling hyperpigmentation and improving skin texture. A brighter complexion is a given with this serum, and it also helps build collagen, reducing signs of aging. 

Other than L-ascorbic acid, the Timeless serum contains ferulic acid and vitamin E, which are supposed to extend vitamin C’s life and make it all the more effective. 

The serum is nonetheless perfectly safe to use, as it doesn’t contain any fragrance, color dyes, or parabens. And using it is pretty simple; all you really need are two to three drops. 

You can use it both morning and night on cleansed skin. The formula is very lightweight (it doesn’t even feel greasy) and penetrates the skin fast.


  • Non-greasy vitamin C serum
  • Works for aging and sun-damaged skin
  • Can be used morning and night
  • Affordable


  • Should be refrigerated to slow down oxidation
  • Not recommended for sensitive skin

2. The Ordinary Ascorbyl Glucoside Solution 12%

Redditors are very much in love with the brand called The Ordinary, but that love becomes even more evident when talking about vitamin C serums. Various products are mentioned, including the brand’s 100% L-Ascorbic Acid Powder and its Vitamin C Suspension 30%. 

However, the Ascorbyl Glucoside Solution 12% stands out for one user who said that they noticed visible changes in about two to two and a half months. Their skin changed for the better, as it used to be dry and dehydrated but is now more normal to dry. The serum reduced their redness too, and as another user also said, it made the skin look almost airbrushed.

This particular solution contains a water-soluble derivative of vitamin C, which in layman’s terms basically means it’s gentler than some other serums on the market today. Don’t worry, though — it still offers exquisite results by reducing signs of aging, dullness, and unevenness. 

You can use this serum both morning and night (you only need a couple of drops). Do know that it is a bit sticky (but still lightweight). The stickiness will go away once you top it off with a moisturizer.


  • Beginner-friendly, gentle vitamin C serum
  • Lightweight formula
  • Smooths out the skin and reduces redness
  • Affordable


  • It can be a bit sticky

3. SkinCeuticals C E Ferulic® Serum

What is the best vitamin C serum Reddit users often recommend to anyone battling signs of aging? Though the Timeless serum is a clear favorite, the SkinCeuticals C E Ferulic serum delivers on its promises too and ensures good skin days for weeks on end. 

This is a daytime L-ascorbic acid serum that offers superb environmental protection, making sure the skin isn’t affected by infrared radiation and pollution (ozone and diesel, for instance). At the same time, it improves the skin’s appearance dramatically — Redditors agree that it visibly clears up the skin and smoothes out its texture.

However, one of the main selling points of the serum is that it has been thoroughly tested. It has been clinically proven that it helps reduce oxidative damage and can fight free radicals. That’s awesome news for anyone who wants to keep their youthful looks for longer — this serum ought to firm up the skin and reduce any signs of wrinkles and lines.

The only trouble here is the price tag. Unlike The Ordinary or Timeless serums, SkinCeuticals serum’s price is, as one Redditor says, eye-watering.


  • A premium vitamin C, E, and ferulic acid formula
  • Offers fast results
  • Absorbs easily
  • Clinically proven to work


  • Expensive 

4. Mad Hippie Vitamin C Serum

In case you have rather sensitive skin that probably wouldn’t react well to highly potent serums, the Mad Hippie Vitamin C Serum could be your new best friend. Instead of using L-ascorbic acid, as some brands do, this serum contains a more stable vitamin C derivative called sodium ascorbyl phosphate. This makes it less irritating than other serums, and as research says, a potent acne blaster!

You’ll be happy to know that this serum won’t just help you fade acne scars and brighten up your face. It can also reduce visible redness, making sure your complexion is even and smooth. At the same time, it works wonders for wrinkles and lines, letting you maintain your youthful glow and firmness. 

Since SAP is a natural acne killer, too, this serum may actually keep acne at bay as well. You’ll likely resolve a few skin issues with just one product! Best of all, as this is a more stable form of vitamin C, the serum shouldn’t oxidize (and become useless) in mere weeks. 


  • A gentle formula that’s perfect for sensitive skin
  • Fights aging signs and acne scars
  • Reduces redness and the appearance of wrinkles
  • Low chance of oxidation


  • It doesn’t do much for hyperpigmentation (like liver spots)

5. Rohto Melano CC Vitamin C Essence

Most of the serums we mentioned work well on dry and dehydrated skin, with most offering promising results for other types of skin as well. But what is the best vitamin C serum Reddit users suggest for acne-prone, oily skin? According to most of them, that would be the Rohto Melano CC Vitamin C essence.

This serum works best when used to lighten acne scars and dark spots on the face. The main benefit here is that it tackles hyperpigmentation and texture effectively. But surprisingly enough, it can be used as either a spot treatment or all over the face.

The formula is anti-inflammatory and antiseptic, so it should help keep the skin clear too. However, it can be a bit oily and have a strong scent — if that’s something that bothers you, you may want to choose something else. The formula sinks into the skin quickly, though, so you won’t be left with a greasy face.

The main selling point, however, boils down to the packaging. Unlike other serums, which typically come with a dropper, this essence comes in a tube and has a special nozzle. Since the key ingredient is L-ascorbic acid (very effective but unstable), the packaging ensures the formula doesn’t oxidize, as the nozzle keeps the contents air-tight.


  • A potent formula that fights acne scars and hyperpigmentation
  • Tackles redness too and keeps the skin clear
  • Special nozzle prevents oxidation
  • Affordable 


  • A bit oily with a somewhat strong scent

Final Thoughts

So what’s the best vitamin C serum Reddit users hail as the true winner of this skincare battle? For most Redditors, the Timeless serum is the next best thing since sliced bread, though I’m pretty impressed with the other four as well, all offering exquisite results for different skin types. Still, the main takeaway is to use your preferred serum religiously — apply it each day, and you will gain more confidence as your skin clears up, the redness disappears, and those pesky dark spots are eradicated forever!

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