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IUNIK Beta-Glucan Power Deep Moisture Serum is a vegan, fragrance-free Korean skincare essential that delivers 20% more hydration than hyaluronic acid using naturally-derived beta-glucan from mushroom yeast. Designed for dry, sensitive, and mature skin, it deeply moisturizes, improves elasticity, and soothes irritation without clogging pores, making it a versatile booster for daily skincare and makeup routines.



















| ASIN | B07NNVZNQR |
| Best Sellers Rank | #1,631 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #58 in Facial Serums |
| Customer Reviews | 4.4 4.4 out of 5 stars (2,037) |
| Item model number | CJAPQ_02 |
| Manufacturer | COTHEON Co., Ltd |
| Product Dimensions | 1.67 x 2.1 x 6 inches; 0.78 ounces |
| UPC | 759430449315 |
J**2
Game changer - great on its own or mixed into cosmetics
This is a great hydrating serum to add to your skin care routine. It is quite thick and a little goes a long way. It doesn’t leave a residue and it plays well with other skin care products as well as makeup/sunscreen. As someone else mentioned it’s not as “life changing” as some of the claims, however it can also be used to add moisture to other products. I have a favorite sunscreen (Australian Gold light) which happens to be matte when it drys. At 57 with some fine lines all it did was highlight those no matter what primer or moisturizer I used underneath. The color (it doubles as a BB cream) is perfect for me because it has slightly pink undertones. I wanted to move away from my foundation routine and have a more “natural” look. Finding a hydrating replacement was impossible. Knowing beta glucan is added to many skin care products to enhance hydration, I decided to experiment with mixing a ratio of 40-50% beta glucan to my sunscreen to make it more “dewy”. I mixed a small amount in a little “tester jar” I had. After thoroughly mixing, it set overnight to ensure the ingredients meshed together. (I first tried this in my hand and it took awhile for everything to come together so it was homogenous). The next day I applied it to my skin and had exactly what I wanted. A silky light to medium coverage sunscreen that left my skin looking slightly dewy, but not greasy. Once it set (was no longer shiny), I applied a bit of blush and that was it. It set up leaving me looking natural - not overly dewy. It also had enough coverage to hide unevenness in my skin tone. It also doesn’t highlight my fine lines as much- only slightly under my eyes (which at my age comes with the territory). I also use this as part of my AM and PM skincare. Layering it with HA and my vitamin C serum. I will also use a bit before using my CosRx masks to add a bit more hydration. I usually spray my face with Eue Thermal mineral water before applying the beta glucan (or any HA product), then apply the mask. Overall, it’s a great option for anyone allergic to HA or wanting to boost their routine. Will it perform miracles? No. But it is a great booster. Using it in some of my cosmetics took some trial and error, but I’m really happy I tried it. So the purchase based just on that was worth it to me. Depending on how you use it, it seems to last a long time.
S**W
New Fav!
Great serum for dry, sensitive skin. Serum is not watery, feels silky, and lux. Extremely hydrating, non-irritating with daily use. It’s a little tacky at first but absorbs well, leaving my skin looking healthy and glowy. Love that the ingredients are vegan and clean. Definitely recommend.
R**R
A little Pricey, but LOVE IT! So Hydrating and Good for Skin-Barrier
Saw this being reaved about on other social media, and I finally bought it over hyaluronic acid when my skin barrier was REALLY compromised two months ago. Even though I'm an acne prone oily skin girl, I still use this EVERY DAY and NIGHT because it's so hydrating. My skin has never felt smoother and more hydrated. This is the closest to glass skin that I've ever gotten. I will say it's a bit pricey...but it's worth it imo.
K**R
Good for Oily Acne Prone Skin
I have oily acne prone skin and this has been a good moisturizing serum for me. It has not caused me any closed comedones. Has no scent which I love. I gave it a 4/5 stars because I feel like it’s not as hydrating as my hyaluronic acids from good molecules.
P**R
hydration potion
genuinely one of my most essential staples in korean beauty. i’ve been using this product for nearly four months and it’s done a great job hydrating my skin and plumping it up a bit more. i have acne prone so i do have monthly breakouts but this product is not responsible for clogged pores. i’ve actually noticed it has reduced the appearance of closed comedones on my face. i took a break from retinol until recently and didn’t do my skincare for two days (big mistake) because my skin started cracking and made my makeup look very flaky. i applied this overnight and reapplied the next morning with my purito oat moisturizer and miraculously healed my skin quickly. i highly recommend this product! make sure your skin is damp when applying.
C**Z
Hydrating non comedogenic
This is great better than hyaluronic acid for me it really retain moister I love it will buy again!
R**N
Caused acne breakouts
I hate that this didn't work for my skin because it's recommended literally EVERYWHERE. I have oily, dehydrated skin but this did not work for me. It did hydrate my skin, but it also caused breakouts. I don't know if it's just my skin, but I guess I can't tolerate something in this serum formulation. If beta glucan is a skincare ingredient, my skin usually has no issues so I can't pinpoint what it is. Maybe the amount of beta glucan is too high for my skin type. If you have acne prone skin, I would do your research first, and see if this might cause breakouts for you.
G**E
Perfect serum!
Holy grail product. This product is amazing at soothing, healing, and hydrating my skin. Safe for my sensitive skin, rosacea and acne prone skin.
M**L
This product is SO GOOD. beyond expectations
E**A
I tried this serum for the first time and was surprised how much I liked it. It is perfect to use on dry skin and works together with other products/ingredients without problems. It's gentle, absorbs fast and is also fragrance free which is a huge plus. This serum is worth every penny; the bottle is generously sized and a little goes a long way! Will for sure reorder.
Y**Y
Absolut geeignet für trockene Haut. Seitdem ich Stille ist meine Haut relativ kompliziert und dann wieder super einfach… das serum gibt tatsächlich einen glow effect und hydriert die Haut. Fühlt sich einfach nur weich und toll an, ohne zu beschweren. Bei mir reicht eine Flasche ca. 3 Monate bei täglicher Benutzung.
A**A
Love the serum really moisturizing
M**E
The perfect serum for winter hydration. I use after toner flooding. I will purchase again.
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