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best vitamin c serum
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C+C Serum

vitamin c treatment

Brighten, smooth, and firm with a daily antioxidant boost. This powerful serum features 15% vitamin C plus CoQ10 in a silky smooth, water-free formula.

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Upcycled Plastic Science First Woman Owned Made in Los Angeles Cruelty Free


Making C+C Serum

Brighten up and smooth out with two types of Vitamin C. Formulated & bottled by hand in our Los Angeles HQ.
vitamin c for face


Brighten and smooth with a daily antioxidant boost.

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

Ascorbic acid helps prevent premature aging by neutralizing free radicals caused by UV damage & pollution

Ascorbyl tetraisopalmitate, an oil-soluble vitamin C derivative, fights free radicals & brightens skin tone

Powerful antioxidant CoQ10 promotes healthy, youthful skin

Lightweight silicone cream that evaporates within minutes, leaving behind just the powerful antioxidants

moisturizer for dry skin

Skin Type

Perfect for all skin types.

how much moisturizer to use


One or two pumps is all it takes for full face application.

how often should you use moisturizer


Apply daily for maximum benefit.

moisturizer texture


A lightweight, quick absorbing, silky smooth serum.

vitamin c serums

Science & Key Ingredients.

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.


Apply once daily for a radiant glow

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.

Complete your Routine


firming serum

The reviews are in!

see why Chris thinks this is the best vitamin C serum
Chris G.

“The best vitamin C treatment ever!” I don't use a lot of skincare but this is my fav product. It helped even out my skin tone and feels v lux.

Skin Type
Sun Damage
see why people with lovely skin love our brightening serum
Katie W

“Outstanding results” The whole line is chefs kiss but the C+C is elite. the texture is unlike anything i've ever used.

Skin Type
Dryness, Uneven Tone
Kendra J.
Kendra J.

“Cleared my acne and calmed my skin!” I have been using these products for a year and a half now. They have cleared up my acne, calmed down my inflamed and sensitive skin, and evened out my complexion. I just turned 30 this year and these products have smoothed out fine lines and firmed my skin. I love that I can use them on my sensitive skin.

Skin Type
Dry, Sensitive
Acne, Fine Lines
perfect skincare routine
Christina B.

“Ended my acne battle for good!” My Stratia routine has completely changed my skin for the better. My skin is finally healthy and glowing after struggling for years with acne.

Skin Type


Why silicones?

The silicones in C+C Serum are volatile, meaning it evaporates easily at room temperature. Once the serum is applied, the silicone evaporates completely & only the active ingredients are left behind.

Can I use this with niacinamide?

C+C Serum can be used in the same routine as Niacinamide based products like our Rewind or Liquid Gold, but we suggest waiting a few minutes in-between applications. If you use them one right after another, it can potentially cause temporary flushing. It isn't dangerous but may look alarming.

How much CoQ10 is in formula?

CoQ10 is an extremely powerful antioxidant, which means it has to be used in very small amounts to avoid causing irritation. (It's also very bright orange, so high levels can cause staining of the skin.) C+C uses 0.02% CoQ10, which sounds like a tiny amount, but is actually well within its functional capacity.

What is the most effective form of Vitamin C?

There are various forms and derivatives of Vitamin C including L-ascorbic acid. and ascorbyl tetraisopalmitateThe form of vitamin C that’s easiest for your skin to use (and most effective) is L-ascorbic acid.

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