The Kossma Promise
The Kossma Promise +

How We Stay Transparent

We Never

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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

Bioidentical Progesterone Oil | USP Grade


USP grade Bio-identical Progesterone, sourced from wild yams, formulated with vitamin E and organic extra virgin olive oil for maximum absorption. 

Please note that we cannot legally advise on certain questions regarding how to use Progesterone like "can I use this while pregnant" or "can this replace my current medication" - please direct these questions to your medical provider. Thank you for understanding. Topical use only - do not ingest. 




Bio-identical progesterone, vitamin E, organic extra virgin olive oil.

Kossma's progesterone oil is intentionally designed to amplify the advantages of progesterone through the synergistic inclusion of vitamin E & olive oil. Here's the science behind it: Vitamin E, being a fat-soluble vitamin, possesses antioxidant and estrogen-detoxifying properties. This helps in purging the body of surplus estrogen, coupled with progesterone's ability to also detoxify excess estrogen, this formulation ensures a reduction in excess estrogen in the body, leading to a stabilization and rise in natural progesterone levels. The addition of olive oil enhances the skin's absorption of this topical formula.

  • Increases thyroid function (shown to increase free thyroxine)
  • Relief from stress and anxiety
  • Increases Libido
  • Improves mood and depression
  • Lowers breast cancer risk
  • Helps heal estrogen dominant diseases like PCOS, endometriosis, fibroids, fibrocystic breasts, etc
  • Helps restore a healthy menstrual cycle
  • Helps restore ovulation and luteal phase
  • Helps with ovarian cysts
  • Inhibits mast cells releasing histamine
  • Improves bone health and osteoporosis
  • Helps counteract toxic excess estrogen
  • Increases fertility
  • Gives a youthful appearance
  • Helps stop hair loss and regrow hair
  • And the list goes on...


The typical dosage for progesterone oil applied topically is between 20-40 mgs daily. This is optional but we recommend starting with one dropper (drop) of progesterone 3mg and increasing your dose up to 20-40 mgs per day and then staying at 20-40 mgs per day for the duration of your schedule depending on how long you take progesterone. Administer progesterone oil topically to areas with thinner skin, such as the insides of the wrists, inner arms, and inner thighs. Rotate the application site each time for optimal absorption. Topical application only.

Each dropper/drop (one drop of liquid) of Kossma's progesterone oil contains 3mg of bio-identical progesterone.

Cyclic Women:

For cyclic women (those who have a regular menstrual cycle), it's recommended to start bioidentical progesterone therapy in the second half of the menstrual cycle, after ovulation. This is often referred to as the luteal phase and usually begins around day 14 of a 28-day cycle. Women who have standard cycles, 27-30 days can start at day 14 (or after ovulation) and continue daily until your next menstrual cycle starts or 1-2 days before the new menstrual cycle starts. After the new cycle starts, stop the progesterone until the next luteal phase. Women with shorter periods, start at day 12 (or after ovulation) and stop when new menstrual cycle starts.

Natural progesterone levels rise after ovulation, so it's important to start progesterone after ovulation to follow the natural cycles of the body.

Non-Menstruating Women:

Unlike cyclic women, non-menstruating women don't have a menstrual cycle, so they may be prescribed a continuous dosage or a specific pattern that doesn't adhere to a menstrual cycle. Please see your health care provider for proper instructions based on your individual needs (breastfeeding women, pls follow instructions given by your healthcare provider)

Menopausal Women:

For menopausal women, hormone levels don't fluctuate in the same way as they do during the menstrual cycle. Therefore, progesterone might be taken continuously or in a cyclical manner, depending on your individual needs.

Kossma Progesterone+

Ray Peat extols the benefits of progesterone beyond its traditional association with pregnancy, emphasizing its broader physiological significance. Progesterone is deemed the most protective hormone produced by the body, crucial for brain and immune system health. It acts as a fundamental hormone for adaptation and resistance to stress, helping in the production of anti-stress hormones by the adrenal glands and reducing the need for cortisol, excessive levels of which can lead to various health issues. Moreover, progesterone has been found to alleviate anxiety, enhance memory, protect brain cells, and even prevent epileptic seizures. It improves respiratory functions, heart efficiency, skin aging, and bone health, and is beneficial for treating arthritis and immunological issues. When combined with vitamin E, it is absorbed efficiently and helps in regulating hormone production and thyroid function. Peat emphasizes that progesterone's role extends beyond reproductive health, being a crucial component for overall well-being.

The Kossma Promise.

Every supplement from Kossma is produced in a facility that is ISO certified and adheres to Good Manufacturing Practices (GMP). To guarantee the purity and quality, all of our products undergo third-party testing. We utilize USP grade ingredients and take an additional step in quality assurance with a Finger Print ID test. In this process, the DNA of our supplements is verified to confirm their authenticity and ensure they match the claimed identity.

Customer Reviews

Based on 1 review
The ultimate anti-stress hormone

This is my new favorite progesterone, and I've tried many brands. I LOVE IT! I let my sister use some, and she loves it too.

I rub a few drops onto my gums at night, and within an hour, I'm feeling warm and fuzzy and ready to drift off to sleep.

The taste is slightly bitter but not bad. I'm so glad it isn't flavored or scented. Doesn't have much of a smell at all, which I really appreciate.

I definitely DO NOT want a refund over a label typo. Luckily, I realized the dosage error myself and only used a few drops, but no big deal either way. I've taken 100 milligrams of progesterone before, and it was a very pleasant and relaxing experience for me. I noticed the Mayo Clinic website even recommends 200 to 400 milligrams orally, taken daily for 12 days per menstrual cycle for certain issues. So it's quite safe, but definitely do your own research. I highly recommend Dr. Ray Peat's articles.

Thank you, Stephanie, for all your hard work and amazing products. ♡