Zelens Power C High Potency Vitamin C Treatment Drops review

OMG, did Gio sell out, too?

I hear ya. There was a time when I wouldn’t have touched a vitamin C serum in a see-through bottle with a ten-foot pole. Vitamin C is terribly unstable and loses its effectiveness quickly when exposed to light. “Only get a bottle when it’s opaque,” I ranted for years.

And yet, here I am, raving about Zelens Power C High Potency Vitamin C Treatment Drops, which, as you can clearly see, doesn’t come in an opaque bottle. So, how much was I paid?

Nothing (unless you count the PR sample as payment – I don’t). I just reserve the right to change my mind as new info comes to light. That’s what science peeps do, right?

Should Vitamin C Come Only In Opaque Bottles/Tubes?

Here’s what happened. Usually, at blog events, you get to talk to a PR who hits you will all the nonsense the marketing department has come up with to make an ordinary serum sound like the most revolutionary thing ever (like we can’t see through it 🙄 )

The Zelens event was different. Dr Marko Lens, creator of Zelens, showed up and entertained us with a long talk about all things skincare. When he nonchalantly mentioned that he didn’t understand why women are so obsessed with opaque packaging, we all ganged up on him (no worries, it wasn’t violent).

“But, doesn’t vitamin C become useless when it comes in contact with light and air?,” we all wanted to know.

Pure vitamin C (L-ascorbic acid), absolutely, yes. That’s a pain to work with because it’s extremely unstable and won’t be effective for long. You want that packaged in an opaque bottle.” Dr Lens confirmed. And then added, “but the newest derivates of vitamin C are a lot more stable. As long as the product has a good preservative system, the vitamin C derivative will remain intact and effective even if exposed to light.

Related: The Complete Guide To Vitamin C In Skincare

Need help creating an anti-aging routine that really works? Sign up to the newsletter below to receive the “Anti-Aging Skincare Routine Cheatsheet” (it includes product recommendations, too!).

What’s In Zelens Power C High Potency Vitamin C Treatment Drops?


Don’t let the name fool you. Ascorbyl Tetraisopalmitate (AT) is simply the stable Vitamin C serum I’ve been telling you about. It’s made by mixing L-Ascorbic Acid with Isopalmitic Acid.

AT stands out from all the other forms of vitamin C because it can penetrate your skin the fastest. It’s not as effective as pure vitamin C (derivates almost never are), but it still does everything a good form of vitamin C should do:

  • It fights the free radicals that cause premature aging
  • It boosts the production of skin-firming collagen
  • It brightens the complexion and helps fade dark spots
  • It boosts UV protection (when used with sunscreen)

Zelens has put a whopping 20% here. That’s definitely enough to do the job.

One more thing: AT is gentler than pure vitamin C, so most of you will be able to use the serum without experiencing any negative side effects, like irritations. But, if you have sensitive skin, do a patch test, first. Just in case.

Related: Can You Use A Vitamin C Serum If You Have Sensitive Skin?


Derived from coconut oil and glycerin, Caprylic/Capric Triglyceride is loaded with fatty acids that moisturise skin, leaving it softer and suppler.

Lighter in texture, it basically has all the moisturising properties of coconut oil without its comedogenic potential.

P.S. The serum also contains linoleic acid and phospholids. Translation: more fatty acids to keep your skin soft and supple all day long.

Related: Everything You Ever Wanted To Know About Coconut Oil In Skincare


Lightweight and fast-absorbing.


Clean and subtle. You can barely smell it.

How To Use It

In the morning, after cleansing.

Performance & Personal Opinion

Zelens Power C High Potency Vitamin C Treatment Drops has a lightweight texture sinks immediately into the skin, leaving no residue behind.

I put it on in the morning to boost the effectiveness of my sunscreen. But I quickly noticed it makes my makeup go on more smoothly, too!

That’s cos vitamin C does wonders for the texture of your skin. It smoothens it out, hydrates skin and makes it glow. It’s a subtle glow, don’t get me wrong,  but it’s enough to make my face look healthy and fresh.

Plus, the serum is very hydrating. Vitamin C takes all the credit, but the serum is chockfull of moisturizing stuff (such as phospholipids and essential fatty acids) that makes skin softer and plumper. As an added bonus, this makes my fine lines look smaller, too.

I’d never thought I’ds say this but yep, this see-through vitamin C serum is BWB approved!

Who Is This For?

  • Dry skin.
  • Sensitive skin that can’t tolerate L-Ascorbic Acid.
  • Anyone who wants a Vitamin C serum that lasts more than a few weeks.

Who Is This NOT For?

Related: Why Sodium Ascorbyl Phosphate Is The Best Form Of Vitamin C For Oily Skin


A see-through bottle with a drop applicator that only picks up the small amount you need for each application.

Does Zelens Power C High Potency Vitamin C Treatment Drops Live Up To Its Claims?

A high potency concentrate containing 20% Vitamin C to provide maximum efficacy.It’s so vague that it’s true.
This silky treatment supports natural collagen production to promote skin’s firmness and elasticity and reduce the appearance of fine lines and wrinkles.True. Vitamin C has been proven to boost collagen production. But it does this slowly.
Brightens and evens skin tone to reveal a visibly radiant and youthful complexion.True.
Fortified with a proprietary botanical blend with antioxidant extracts and oils rich in vitamin C to help protect from environmental aggressors and free radical damage.True.

Price & Availability

10ml, £50.00; 30ml, £130.00 at Cult Beauty, Net-A-Porter, and Revolve

Do You Need It?

Let’s put this way: if you can afford the splurge, you won’t be disappointed.

Dupes & Alternatives


Coco-Caprylate/Caprate, Caprylic/Capric Triglyceride, Ascorbyl Tetraisopalmitate, Caprylyl Caprylate/Caprate, Isoamyl Laurate, Linoleic Acid, Isoamyl Cocoate, Phospholipids, Glycolipids, Actinidia Chinensis (Kiwi) Fruit Extract, Brassica Oleracea Acephala (Kale) Extract, Brassica Oleracea Italica (Broccoli) Extract, Malpighia Emarginata (Cherry) Fruit Extract, Psidium Guajava (Guava) Fruit Extract, Ribes Nigrum (Blackcurrent) Fruit Extract, Glycine Soja (Soybean) Lipids, Glycine Soya (Soybean) Sterols, Linoleic Acid, Tocopherol, Pelargonium Gravelons (Geranium) Leaf Oil, Citronellol, Geraniol, Linalool.