C+C Serum


An antioxidant powerhouse with 15% vitamin C in a feather-light, water-free formula.

Brighten, smooth, and firm your skin with a daily antioxidant boost. This powerful serum features 10% ascorbic acid (the pure form of vitamin C) plus 5% ascorbyl tetraisopalmitate (an oil-soluble vitamin C derivative). We added some CoQ10 for good measure and put it all in a water-free formula to protect these potent but fragile antioxidants.

1 fl.oz./ 30ml

Brighten up and smooth out with two types of vitamin C.

Rich Vitamin E oil is added to boost the antioxidant impact of this lightweight serum.

Rich Vitamin E oil is added to boost the antioxidant impact of this lightweight serum.

Ascorbic acid

Highly potent antioxidant that helps prevent premature aging by neutralizing free radicals caused by UV damage, pollution, and other sources.

Ascorbyl tetraisopalmitate

Oil-soluble derivative of vitamin C that penetrates skin deeply to fight free radicals, boost collagen production, and brighten skin tone.


Powerful antioxidant that’s found naturally in the skin. CoQ10 levels decrease with age, so skincare featuring this ingredient has anti-aging benefits.

Cyclopentasiloxane, Isododecane, L-Ascorbic Acid, Ascorbyl Tetraisopalmitate, HDI/Trimethylol Hexyllactone Crosspolymer, Polysilicone-11, Dimethicone/Bis-Isobutyl PPG20 Crosspolymer, Ethylhexyl Hydroxystearate, Squalane, Tocopherol, Ubiquinone, Bisabolol, Silica  

How it works

Vitamin C is one of the most powerful skincare ingredients you can get without a prescription. It can:

• Scavenge and neutralize free radicals

•Increase collagen production

• Fade hyperpigmentation

However, the form of vitamin C that’s easiest for your skin to use, L-ascorbic acid, is also extremely unstable, breaking down quickly when exposed to water, heat, or light. That’s why most vitamin C serums turn orange and need to be replaced often.

C+C Serum uses 10% L-ascorbic acid, and to keep it safe, we’ve suspended it in a lightweight silicone formula away from water, heat, and light. That means it’s stable on your shelf for a full year. We also added 5% ascorbyl tetraisopalmitate, an oil-soluble form of vitamin C.

To up the ante, we added another incredibly powerful antioxidant, Coenzyme Q10 (otherwise known as ubiquinone) to make sure no free radical is left un-scavenged. Bisabolol, a key component of German chamomile, helps soothe and calm skin.

Put it all together and you’re left with an incredibly potent yet non-irritating antioxidant serum to help brighten, smooth, and firm your skin.

C+C Serum does not have a pH because it’s an anhydrous (water-free) product.

Is it right for me?

We chose C+C's vitamin C percentages to hit that sweet spot: effective but not irritating. That means it's perfect for even sensitive skin. Since C+C Serum's silicone base evaporates away, it's lightweight, non-greasy, and suitable for all skin types.

Due to the nature of C+C Serum’s silicone base, it’s important to apply the product to clean, dry skin and wait a few minutes before applying your next product. Layering other products without allowing C+C’s base to evaporate can cause pilling or balling of product.

All Stratia products are free of common irritants like fragrance, alcohol, and essential oils.

Customer Reviews
4.3 Based on 198 Reviews
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United States United States
  • Age Range 31- 40
  • Skin Type CombinationSensitiveBlemish-prone

Middle of the road

I love this brand, but this product is just OK. I prefer vitamin C in the form of liquid drops from a number of other brands.

Joshua D.
United States United States
  • Age Range 18- 24
  • Skin Type OilySensitiveBlemish-prone


It was like silk when i applied it to my skin and helped with dark spots :) super gentle to my skin too especially after harsh actives

Lauren R.
Australia Australia
  • Age Range 31- 40
  • Skin Type CombinationSensitiveDehydratedBlemish-prone

Don't be put off by first experience

I have tried cheaper and more expensive vitamin C products and found the cheaper very irritating but the more expensive was totally fine. When I first put this on I was worried. It caused stinging and I applied my moisturiser straight away to try and soothe my skin and of course it pilled. But, despite the stinging it actually didn't cause any irritation or breakouts on my rosacea-prone skin! Now I know to leave a bit of time before applying the next product and although I still get a bit of a tingle when I apply it (daily use, halfway through the bottle), my skin looks better than ever. I'm glad I wasn't put off by the initial stinging and definitely don't feel the need to purchase more expensive options to get the results I want.

Rodrigo M.
United States United States
  • Age Range 31- 40
  • Skin Type Sensitive

It burns if you have wounds or recently shaved (=dermaplane).

Burn feeling aside, no other issue. I’m prone to hyperpigmentation and haven’t seen any more spots since using this product. Dries fast. Great price (and packaging) for a vitamin C.

Stacey B.
United States United States
  • Skin Type DryDehydrated
  • Age Range 41- 50

By far my favorite vitamin C

I absolutely love this vitamin C serum. I love the silky smooth texture amd I find it to be very effective.

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