The Kossma Promise
The Kossma Promise +

How We Stay Transparent

We Never

best tallow skincare- Kossma
Use harmful essential oils

Kossma does not use any harmful irritants or ingredients containing seed oils, synthetic, or filler oils in any of our products. We believe in saturated skincare that mimics the skin's natural biome, sustaining the body's natural state.

Compromise our values

Kossma is revolutionizing skincare. We are boldly stepping out of Unsaturated synthetic skincare that is sweeping the beauty industry, but Saturated skincare that mimics our skin's NATURAL biome, restoring our natural glow, with healthy animal fats and whole plant extracts.

Use products from factory farms

Kossma does not engage in harmful mono crop agriculture. We are dedicated to regenerative practices that restore nature, as it was intended. Regenerative skincare is Sustainable skincare, using farming techniques that actually create carbon negatives, rather than fictitious net zero claims, popular today.

We Do

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Proudly Use Tallow

Our products incorporate naturally occurring ingredients such as tallow, botanicals, and herbal extracts. We do not use lab grown or synthetic raw materials and we only work with organic animal products, ensuring the highest quality

Work With Nature

Kossma works with nature, using traditional distilling methods, rendering processes, and techniques known to ensure the integrity of the raw materials. Our apothecary and lab partners are dedicated to upholding these traditional extraction methods, while maintaining modern standards.

Believe that our skin can heal itself

Kossma empowers our customers to discover their skin's natural state and return their biome to it's most healthy condition. Modern day skincare consumption tells us that we need to stay in a constant state of stripping the skin and replenishing wiht unnatural materials. At Kossma, we believe in reducing use and returning to a simpler healthier skincare method

"The best vitamin c serum I’ve ever used! Helps improve dark spots like nothing else and has improved my overall complexion!" -A S

Purely Potent Vitamin C Serum


Kossma's Vitamin C Serum is a blend of pure, potent antioxidants, featuring THD Ascorbate (Vitamin C) and full-spectrum Vitamin E, combined with the nourishing properties of jojoba oil. This formula is crafted to boost collagen production, diminish yellow-brown pigment spots, and brighten the skin while providing protection against UV, environmental, and PUFA damage (Lipofuscin).

Our serum is uniquely formulated with a stable, non-oxidizing, and non-irritating form of Vitamin C, guaranteeing potency and stability. This sets it apart from the commonly used ascorbic acid, which is prone to oxidation and can irritate and sensitize the skin.

The oil-soluble formulation enables deep dermal penetration, boosting skin cell viability by up to 30% compared to L-Ascorbic Acid. This feature makes it an ideal choice for anyone seeking to enhance their skin's health and appearance with a gentle, natural, yet highly effective solution.


    jojoba oil2, tetrahexyldecyl ascorbate1 (non-oxidizing vitamin c), mixed tocopherols (vitamin e)

    EcoCert1   Organic2   Wildcrafted3

    We only use herbs that are Natural and Organic Cosmetic Certified by ECOCERT Greenlife according to the ECOCERT Standard, ensuring the highest quality, natural and organic ingredients in our products.


    Best for used on dull skin, to improve laxity, hyperpigmentation, and melasma.

    Pregnancy & kid-safe | 1oz



    Step 2: Dispense onto fingertips and smooth over clean face and neck. Follow with the rest of your skincare routine.

    Vitamin C+

    Kossma's Purely Potent Vitamin C Serum offers a breakthrough in skincare. Traditional ascorbic acid, often found in vitamin C serums, can irritate the skin and is prone to oxidation, losing its efficacy. In contrast, Kossma's serum uses a gentler, more stable form of Vitamin C, ensuring maximum benefits without the common drawbacks. This formula stands out for its minimal, clean, and natural ingredients, embodying purity in every drop. It's designed to rejuvenate the skin, providing antioxidant protection, enhancing brightness, and promoting a more even skin tone, all while being kind to even the most sensitive skin types.

    As an added benefit, Kossma's Vitamin C serum is designed not to cause sun sensitivity and does not exfoliate. This makes it exceptionally compatible with various skincare actives, seamlessly integrating into your skincare regimen.

    Nature is simple.

    So is Kossma. That's why we are proud to be an animal forward wellness company. Kossma products are grounded and work with nature to promote essential wellness for the mind and body.

    Regenerative Skincare.

    We use Regenerative farming and extraction methods, working with local farms and direct sources, whenever possible. Our products are from humanely raised animals, hormone free, grass fed and finished, ensuring maximum bioavailability.

    Customer Reviews

    Based on 498 reviews
    The only vitamin C I use!

    I'm an esthetician and I haven't found a vitamin C that I've felt comfortable recommending to everyone, until this! I use it everyday and I swear it really helped prevent pregnancy melasma/hyperpigmentation. It is shelf stable, which I love and is hard to find, and everyone else I've told to use it has loved it. Plus, it's a fraction of the price of the ones you see on the market and you know with Kossma it will really do what it says it does. Will be repurchasing for life.

    Gail M.
    The Best Vitamin C!!

    Love this serum! It goes on so smoothly and leaves my face feeling very healthy and soft. I am in my 50’s and I definitely have seen an improvement in my skin since I started using Kossma products. Definitely my favorite skincare company!

    Glowing skin

    This serum makes my skin glow as well as moisturizes without feeling greasy.

    Loving it

    Feels incredible on my skin. Still new to it so will continue to see the results particularly with pigmentation but overall it has given my skin a more even tone and feels super hydrated and smooth.

    Julia Loeung

    I don’t know, man. I’ve had some big issues with paying a ton for skincare, trusting what the professional is telling me, only to have a $100 bottle of oxidized, stinky, useless vitamin C serum. Eye roll.

    I have been using Kossma’s Vit C for over a year now, and I’m so thankful for not only the product, but the client education provided.