JKosmmune Serum
JKosmmune,  serum

JKosmmune Serum

the claim

The JKosmmune Serum claims to be a lightweight, high-performance serum, fortified with powerful β-glucan that boosts skin immunity and visibly corrects tone for glowing and healthy skin.
JKosmmune Serum

the science

In a short formula comprising only 7 ingredients, the hero is of course β-Glucan which is basically a polysaccharide sugar derived from various mushrooms, plants, algaes, yeast or oats. Represented at 99.99% purity for maximum potency (5,000 ppm), it is able to stimulate collagen production, accelerate wound repair, soothe and calm irritated and inflamed skin, moisturise and fight the signs of ageing. Its humectant effect is supposedly 20% more hydrating than hyaluronic acid, able to lock in moisture while simultaneously preventing transepidermal water loss. These strengths stem primarily from the ingredient’s ability to plump fine lines and wrinkles as well as reinforce the moisture barrier, protecting it from the penetration of bacteria, pathogens and other environmental stressors.

In addition to being an excellent source of antioxidants, Portulaca Oleracea (Purslane) Extract contains omega-3 fatty acids, making it effective at stimulating cell regeneration. High levels of Vitamins E, C and beta carotene help it to brighten skin tone and reduce sun induced damage.

Traditionally used in Asian medicine for its healing ability, Cica is a diverse ingredient offering anti-inflammatory benefits to ease irritation and acne while restorative properties stimulate new cell growth, build collagen and improve circulation also making it a powerful anti-ageing ingredient.

As well as being an effective humectant like Glycerin which appears high up in this short ingredient list, Butylene Glycol additionally assists to increase the penetration of other ingredients and hence boost their effectiveness.

JKosmmune products are composed of only natural, safe ingredients and certified cruelty-free.

the ingredients

Water, Glycerin, 1,2-Hexanediol, Beta Glucan, Portulaca Oleracea (Purslane) Extract, Centella Asiatica (Cica) Extract, Butylene Glycol
JKosmmune Serum Ingredients

the packaging

The JKosmmune Serum is presented in a clear glass dropper bottle. There is a plastic net at the neck of the bottle that scrapes the pipette’s outer surface upon removal to prevent dripping.
JKosmmune Serum Packaging

the analysis

An ideal assessment is returned from both the CosDNA and EWG databases, rating the JKosmmune Serum an ideal low hazard with no warning flags.
JKosmmune Serum CosDNA Analysis

the application

Apply 1-2 drops to skin morning and night after cleansing. Gently pat into skin to allow product to fully absorb.
JKosmmune Serum Directions

the scent

The serum has no detectable scent and no added fragrance.

the cost

The 50ml bottle of serum costs USD$52.00.

the availability

JKosmmune products are available at Korean skincare boutiques. I received mine directly from the brand.

the expiry

The serum has a two year shelf life and must be used within 6 months of opening.
JKosmmune Serum Expiry

the performance

Elegantly presented, the serum comes in a clear glass bottle, indicating it is not light degradable, although I always opt to store serums in a dark cabinet. The dropper is securely housed in the bottle with the help of a plastic net around the opening which additionally scrapes excess serum from the pipette as it is lifted out, effectively preventing dripping.

The serum itself is completely clear in appearance and typically more viscous than water in texture, almost like a runny gel. It is pleasantly fragrance free and emits no detectable scent from its natural, cruelty free, CosDNA and EWG approved composition.
JKosmmune Serum Texture
It retains plenty of slip, allowing it to easily glide over the skin. I apply it following cleansing and toning, morning and night. The serum leaves a tacky residue which completely fades in just a few minutes. It layers really well with any combination of products so it’s possible to dull this sensation by adding another serum or cream directly over the top when patience or time is lacking for it to naturally dry down. With only a couple of minutes needed, absorption is quick.

Although instructions suggest 1-2 drops per application, I am a little heavy handed and opt for around 3 to thoroughly cover both face and neck. Application is easy without any irritation, even on sensitive skin. I notice an immediate feeling of moisture but the test with a product like this is in its ability to hold moisture between applications and improve skin health over the longer term.
JKosmmune Serum pipette
In order to test the hydrating effects of this serum, I applied it after cleansing and toner and before emulsion in a short evening routine executed over two consecutive nights. Emulsion only adds limited or light hydration which for me, doesn’t really last over the course of the night, so this process really gave the serum a chance to shine. To my surprise, my face felt plump in the morning. It was only marginally less bouncy than when I layer serums, add oil and a sleeping pack. Impressive! So, it definitely passes the hydration test.

Over time, skin gains a healthy glow because the moisture barrier is strengthened, better equipped to resist environmental stressors and pollutants. Supporting this theory, I noticed my face look healthier with continued use. I have a slightly more sensitive patch of skin on my chin that is the first place I may experience a flare up or discomfort from a product. This is sometimes slightly pink following irritation and usually noticeable to me because of enlarged pores and greater sensitivity. After using this serum twice a day for almost 3 weeks, I observed a great improvement in this region of my face, the usually compromised moisture barrier seems so much stronger, shown by a more regular and consistent skin tone, better oil balance plus a generally more robust nature. I didn’t observe any change int he appearance of pores. I’ve rarely experienced long lasting tone and texture evenness across all parts of my face. So, this serum certainly improved my skin tone although I didn’t see any lightening of dark spots that purslane may bring with regular use. It has been less than 3 weeks so it’s not out of the question with continued application.

As far as achieving a glow, there was no halo-like shine but the fact that my skin simply looks fresher, healthier and bouncier, sufficiently confirms radiance.
JKosmmune Serum

the conclusion

The purity and simplicity of this product are exciting. A handful of natural ingredients, headed by the hero β-glucan, come together to deliver a beautiful serum that does as it claims. My skin feels bouncy, looks fresh and is strengthened with twice daily use. It’s gentle formula will please all skin types.
JKosmmune Serum

the summary

Pros Cons
Safe CosDNA and EWG approved formula Only available online for Australians
Intensely hydrating A bit expensive
Elegant application with quick dry down
Leaves skin bouncy and more resilient
Improves skin tone
Suitable for all skin types


the references

JKosmmune website
Beta Glucan is the Future of Skincare Mack In Style
This Little-Known Skincare Ingredient Might Take Over Hyaluronic Acid’s Job Kaitlyn McLintock
Do You Know The Skincare Benefits of Purslane? The Skincare PharmD
Centella asiatica: The miracle ingredient your skin needs Oh Lolly
Butylene Glycol The Dermatology Review

the disclaimer

Please read in context with my disclaimer.
This product was provided to me free of charge by JKosmmune for review. This post only includes my honest opinion and experience of this product and is in no way influenced by JKosmmune, any of its representatives or any other third party.



  • Kübra

    Merhabalar aynı üründen bende var yalnız geçen sene aldım pek kullanmadım bir kaç ay sonra bakımda serum rengi çok koyu bir sarı oldu nedeni nedir acaba tekrara kullanmaya başladım sakıncası varmı bilgi verirmisiniz

    • denise

      Hi and thanks for your enquiry (which I had to run through Google Translator).

      From what I understand, you bought this serum and it changed from clear to a dark yellow. I’m not aware of such a problem with beta glucan based products. This is a common issue with Vitamin C derivatives. Perhaps the serum was stored incorrectly or is expired?? I suggest you contact the brand directly for an answer as to why this happened and what should be done about it.

      In the meantime, to me, it seems that it has gone bad so I wouldn’t use and certainly not before consulting JKosmmune.

      Sorry I couldn’t be of more assistance.

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