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Round Lab

Soybean Serum.

Round Lab Soybean Serum
Serums

About this product

A lightweight gel serum containing soybean extract, ceramides, and fermented ingredients designed to hydrate, soothe, and support skin barrier repair.

Best for

Dry skinSensitive skin
Serums

The Guru Index verdict

81%

Approved

Approved · 81%
2Reviewers
2Approved
0Mixed
0Skip

What the gurus are saying

Gurus consistently praise this serum for its fast-absorbing, weightless gel texture that hydrates without heaviness or grease, making it ideal for combo, oily, and dehydrated skin types. The formula's ceramides, cholesterol, and barrier-supporting ingredients earn repeated applause for calming sensitivity and repairing compromised barriers. Common strengths cited include affordability (especially on sale), versatility across morning and evening routines, and gentle brightening from niacinamide. No significant complaints surfaced across reviews.
Synthesized from 2 expert reviews

Key actives & flags

NiacinamideVitamin ECeramidesPeptidesSqualaneFragrance-freeAlcohol-free

Full ingredients

Water, Propanediol, Glycerin, Glycereth-26, 1,2-Hexanediol, Coco-Caprylate/​Caprate, Panthenol, Glycine Max (Soybean) Seed Extract (10,032Ppm), Squalane, Ceramide NP, Ceramide NS, Ceramide AP, Ceramide AS, Ceramide EOP, Hydrogenated Lecithin, Stearic Acid, Phytosphingosine, Cetearyl Alcohol, Cholesterol, Adenosine, Lactobacillus/​Soymilk Ferment Filtrate, Lactobacillus/​Rye Flour Ferment, Bacillus/​Soybean Ferment Extract, Pantothenic Acid, Folic Acid, Pyridoxine, Thiamine Hcl, Riboflavin, Cyanocobalamin, Hydroxydecyl Ubiquinone, Niacinamide, Tetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Betaine, Trehalose, Ethylhexylglycerin, Polyacrylate Crosspolymer-6, Acrylates/​C10-30 Alkyl Acrylate Crosspolymer, Glyceryl Stearate Citrate, Butylene Glycol, Tocopherol, Theobroma Cacao (Cocoa) Seed Extract

Every take, in full

What the gurus are saying.

Every take we've logged from this product's reviews across YouTube. Click any row to watch the moment they said it.

All takes Approved only Skip only Mixed only Hide sponsored
Approved
"This Round Lab soybean serum provides the three essential lipids that you need to strengthen up that skin barrier and keep it really strong and healthy: ceramides, cholesterol, and fatty acids. These are the main lipids naturally found in the skin barrier. The serum provides all of those essential ingredients, what I call the holy trinity. They're that good in this lightweight, fluidy gel texture. It's incredibly hydrating. It's very, very light and thin. It's refreshing, a little bit cooling even on the skin, and incredibly breathable, and yet it still is strong enough to fight off the dehydration and strengthen up your skin barrier. It's not doing it in a cream or an oily type of format. It's so perfect for hot, humid summer days. It's going to work for a majority of skin types, even if you're struggling with lots of oil on your skin. And it just feels so, so good. This has become a staple for me. It's been in all of my skincare routines, especially in the morning when I want to keep things nice and light and I want to wear some makeup as well."
All 3 takes from Kelly Driscoll
Lightweight Barrier Repair for Summer: 8 Products That Won't Make You Greasy
"It sinks in very very quickly. This is a kiss of moisture, but it's not heavy oil like moisture. It's not buttery like moisture. Don't let that milky appearance fool you. There's a lot more hydration, wateriness, and lightness here than it first appears. Really great absorbency into the skin without a sticky or tacky feel or a heavy weight. So this is great for combo oily and acne prone skin. It is also great for anybody looking for a very gentle gradual brightening to your skincare products because of the niacinamide content here and even the soybean. It is about a very gentle healthy glow. If you do get some dark marks after acne, the niacinamide content in here will help to gradually fade that. It's a very gentle type of product that's going to bring out that healthy, even complexion. It's going to help address dull skin as well and really help to address that issue on the skin between a lot of oil and a lack of water or dehydration. This is great if you especially identify with a lot of oil on your skin, but that deep down thirsty feeling. It's that you need the ceramides, cholesterol, fatty acids to get that barrier stronger so that your skin holds on to more hydration in the long run. This is that type of product that helps to balance out multiple symptoms of a weak barrier and give you the ingredients you need to solve that issue, right, but also some additional benefits while you're doing it."
How I Get a Warm Summer Glow Without Sun Damage (GRWM Skincare + Makeup)
"This is the Round Lab soybean serum. And I've really been into this. I actually used this a couple of years ago, but I recently just picked this one back up because I remember it having this beautiful plumping light gel texture, perfect for summer weather. And that's exactly what I've been craving for my morning routines. I need something light, but I don't need something that disappears off of my skin. I have combo skin, very prone to dehydration. Even in the summer, I got to take care of that barrier. This is secretly an amazing barrier care serum. Ceramides, cholesterol, fatty acids, a really great skin respectful formula. No fragrances, drying forms of alcohol. It's really great for my sensitive skin, but it's hydrating. It's light. It's refreshing on contact. It feels amazing for the heat, but it still protects my skin barrier as well."
7 Products That Fix Every Summer Skin Problem!
"This Round Lab soybean serum provides the three essential lipids that you need to strengthen up that skin barrier and keep it really strong and healthy: ceramides, cholesterol, and fatty acids. These are the main lipids naturally found in the skin barrier. The serum provides all of those essential ingredients, what I call the holy trinity. They're that good in this lightweight, fluidy gel texture. It's incredibly hydrating. It's very, very light and thin. It's refreshing, a little bit cooling even on the skin, and incredibly breathable, and yet it still is strong enough to fight off the dehydration and strengthen up your skin barrier. It's not doing it in a cream or an oily type of format. It's so perfect for hot, humid summer days. It's going to work for a majority of skin types, even if you're struggling with lots of oil on your skin. And it just feels so, so good. This has become a staple for me. It's been in all of my skincare routines, especially in the morning when I want to keep things nice and light and I want to wear some makeup as well."
Approved
"I finished off the Round Lab soybean serum, which I really enjoyed. Definitely would repurchase it or will repurchase it. It's really nice serum. Works nice in morning or evening or both."
All 8 takes from No BS Beauty
Round Lab Skincare Brand Product Favorites & Least Favorites - What is Worth Trying From Round Lab?!
"The soybean serum, I absolutely love this stuff. It is full of skin identical ingredients, ceramides. It's wonderful, it's very hydrating, very calming. This stuff is really nice and it can almost rival any other serum out there in terms of hydration benefits and skin loving ingredients and it's not terribly expensive. It's really nicely hydrating, calming and feels really good on your skin. It's got just a wonderful texture to it as well. I just love it."
Best Healing, Nourishing, Repairing & Soothing Skincare Products for Irritated, Damaged, or Dry Skin
"The soybean line has been wonderful and this one contains soybean extract several ceramides different ferments. It also contains panthenol which is a good calming soothing ingredient and this stuff is really wonderful and it's pretty affordable. A little bit of this one goes a very long way. It's almost got like a gel texture to it which I really appreciate. It's really wonderful calming soothing non-greasy at the same time."
Best Serums with Ceramides for Smooth, Soft Skin - My Favorite Hydrating Serums
"I never had any clue how much I'd end up really liking this product until I picked it up, but that's the Round Lab Soybean Serum, and it was mentioned by a lot of you who asked me to review it. I had no idea, I kind of just brushed over it. Round Lab, they have a lot of hits but they have a few misses in there, just some products that just aren't that great. This one's really wonderful. We've got soybeans, squalane, ceramides, cholesterol, folic acid, and then I think there's several different ferments in there, lactobacillus ferment. It's got a really wonderful texture to it, kind of like a gel serum texture, and it's just really, really nice product and no scent to it. It can be a little bit expensive if you don't find it on sale. I think it's like 30 bucks, but if you can get it on sale, it's even better."
The Best 10 Affordable K-Beauty Skincare Product Favorites You Need to Try!
"Round Lab Soybean Serum, 20 bucks. It's a nice hydrating serum that's great for soothing skin as well as repairing the skin barrier if it's damaged. It's got soybeans, ceramide, squalane, coco seed and scorable glucoside, vitamin C derivative. I would say it's geared towards normal, maybe dry skin, but if you use it in the evening, oilier skin as well."
My K-Beauty Skincare Favorites 🙌🏆💖 Best Korean Beauty Products Currently in My Routine
"Round Lab Soybean Serum which is just really lovely. Both fragrance free, really easy to fit in your routine. This one's really nice. I use this one a lot on my neck and décolletage right after getting out of the shower and it's just lovely, full of good ingredients in here."
How to Layer Peptides with Active Ingredients & Get the Most Benefits Your Anti-Aging Products
"The Round Lab Soybean Serum, this one's really quite nice from Round Lab."
Empties! 🎉 Skincare & Beauty Products I Finished This Month
"I finished off the Round Lab soybean serum, which I really enjoyed. Definitely would repurchase it or will repurchase it. It's really nice serum. Works nice in morning or evening or both."
Top Serums for Plumping & Decreasing the Appearance of Wrinkles - Serums for Mature Skin
"The Round Lab Soybean Serum is really nice. It's great for daytime or evening, though I like using it daytime because it's got such a wonderful texture. It's got soybean extract, ceramide, squalene, several different ferments, and vitamin E, and it's got a lovely kind of gel serum texture to it, which makes it really friendly for most skin types as well as acne-prone skin. It just feels really nice, soaks in really quickly, and plays well under other products. This line from Round Lab is just wonderful, really really nice."
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