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 189 Reviews
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Natalie M.
United States United States
Nice! But silicone-y

Super nice vitamin c serum! My only complaint is the silicone feeling it leaves behind(even after rubbing it in thoroughly)

Jenna K.
United States United States
  • Skin Type SensitiveDehydrated
  • Age Range 41- 50
So far, I love it

I haven't seen any dramatic changes, but I do like the texture - it is slippery but easy to apply on my face. The only reason I took one star off is because I don't love the container, I like to be able to get the last bits out! However, so far, I'm loving it and will reorder.

Jessica W.
United States United States
  • Skin Type CombinationDehydratedBlemish-prone
  • Age Range 25- 30
Best vitamin C for me!

This is the best vitamin C I have found that works with my skin and my routine! For some reason my skin is SUPER sensitive to Vitamin C and Vitamin C derivatives. Most Vita C’s break me out or irritate my skin so bad it gets inflamed! And I think part of it is because I use a high strength Retinol and my skin just can’t take 2 super strong additives. But for whatever reason, maybe because of how well it is formulated, this vita C doesn’t irritate my skin at all and I actually saw amazing benefits from using it. I can’t speak for everyone because everyone’s skin is different and unique, but this serum (more like an emulsion, I think) works wonders for me.

Alyssa F.
United States United States
  • Skin Type Combination
  • Age Range 31- 40
Go-to ViaC

love the potency of this vitamin c serum. Was looking for a product with ascorbic acid that was more stable than others. Didn't love the heavy silicone feel at first but I have figured out the best way to incorporate it into my routine and now it is my go-to viaC!

Michelle R.
United States United States
  • Skin Type CombinationOilySensitive
  • Age Range 25- 30
C+C serum t

Love it! Works and makes my skin look and feel very smooth always getting compliments. Use it everyday with my liquid gold.