S:um37 Time Energy Resetting Softening Emulsion

I’m finally reviewing a skincare product from one of my most beloved brand, s:um37. I have yet to find a s:um37 product that I don’t like, seriously almost everything wows me. 

S:um37 is young brand, established in 2007 by LG (other known brands by LG are Ohui, Faceshop and The history of Whoo). Its a high end brand department brand that specializes in fermented skincare. 'sum' means ‘breath’ in Korean, and the 37 is the optimal temperature for fermentation. So the brand name “su:m 37” captures the science behind it. The concept of ‘fermentation for skin’ has been there for a while now, starting with famous SKII essence. 

Fermentation is the process whereby microorganisms break down proteins and other substances. This is supposed to increase the production, availability and absorption of amino acids, vitamins, and various antioxidants. S:um37 uses more than 100 microorganism species and more than 300 different raw material to make the various active ingredients. 

Here is a more detailed description, summarized from their facebook site;

During fermentation microorganisms double active substances and break down molecular structure of substances to a size that is able to penetrate the skin more deeply and rapidly to boost the skin’s natural defenses. Su:m 37 differs from other brands fermented skincare in that it offers pure, naturally fermented products and not artificially, so no substance is added to induce fermentation. About 50 plant species grown organically in Hokkaido, a pristine area of Japan, are naturally fermented at a temperature of 37°C for 1102 days, or “3 years + 7 days.” su:m 37 is created using a fermentation technique studied for about eight decades by Japan’s Otaka Research Center, renowned for its research in fermentation. In the first step of this process, undiluted solutions of some 50 clean and pure plants are extracted and stored in a Japanese cedar keg in the Research Center for seven days. The extracted solution is moved to a storage area with a constant temperature of 37°C. It is left to breathe in tune with the melody of a music box while it is fermented dozens of times over three years. The process also produces new substances Zyen and Zyen-γ, which are highly effective at improving the skin. The Zyen and Zyen-γ, are naturally fermented substances, contain various amino acids, natural organic acids and antioxidants. Free of artificial fragrances, dyes and synthetic preservatives, su:m 37 delivers only the valuable effects of natural fermentation. 

Sounds fancy, doesn’t it? A cocktail of fermented extracts, produced somewhere in japan while listening to music ...? okay, that music thing is maybe to much lol, but overall I like the concept. 

S:um37 Time Energy Resetting Softening Emulsion 

I have tried many products from s:um37, but today I will be reviewing the time energy resetting softening emulsion. The sum37 time energy line is supposed to repair damaged skin and balance oil, so reset your skin and bring it back in balance. It’s perfect for my dry combination skin type. I have been using the emulsion and cream for over 8-9 months now. I have also tried the serum in some sample sachets (about 20ml). A review of the cream will be up later, no lets focus on the emulsion. 

I like layering skincare products, so an emulsion is pretty much an indispensable part of my skin care routine. The S:um37 Time Energy Resetting Softening Emulsion is in one word just amazing! When I started using the sum37 time energy line my skin was at a bad place, dehydrated most of then time, and sometimes oily with active acne. I give the emulsion (and cream) much credit for improving my skin condition. I don’t want to make my reviews to long and unreadable so I decided to focus on the emulsion only , but I will review the cream in the near future. 

I don’t have the box anymore, I'm not sure but I think the ingredient list was only in Korean. You can find the ingredients on cosdna, its a long list just as expected: You can find Yeast and Lactobacillus that are used to facilitate the fermentation, Saccharomyces ferment and a cocktail of sum37 fermented extracts, like Watermelon Fruit Extract and Papaya Fruit Extract. 

There are some red flags, so if your skin is sensitive you should be careful, maybe start with samples. For instance, there is Cetearyl Alcohol and Citral (natural plant extract used as fragrance). I have a sensitive skin that and I dint experience any issues. Honestly, I don't have a problem with alcohol anymore, I realize now that the most important thing is the formulation. 


The product comes in a beautiful sturdy glass bottle of 130 ml. I just love s:um37 packaging it’s so luxurious and modern, the only downside is that its kind of heavy and not travel friendly. Still, I prefer such design to plastic, aesthetically very appealing. 


The consistency is slightly white kind of a of milky creamy. Its richer than most heavy lotions (and some emulsions) but still light compared to a cream. I think its just what we would expect from an emulsion. The first you will notice is how softening it is, the word 'softening' is not for nothing in the name. It’s honestly the most softening and moisturizing emulsion I have ever tried, I can even use it as a last step in my skincare routine that’s how hydrating it is. I apply the emulsion right after my ampoules and serums, and depending on how my skin feels follow with a cream (its often the sum37 time energy) 


When applied it sinks into the skin immediately, without being sticky or oily, just leaving a glow and dewiness.What you see with many rich skincare lines is that they fail to control oil and make the problem even worse. Hence, for folks like me with dehydrate skin that can turn oily depending on weather and hormones, its always been difficult to find a skincare range that will mange to bring the skin in balance. That’s exactly what the emulsion did for me, I'm using it now for almost a year consistently and can see the long term benefits. Fine on my forehead are less visible, oil production in balance, no more active acne and skin is very hydrated. I have also noticed that it reduces redness and slightly brightens up skin tone. 

Final thoughts

I cant rave enough about it, the sum37 emulsion is awesome! it has really delivered on its promise; resetting the skin balance, hydrating, softening and controlling oil. I do believe in the benefits of fermented skincare, and s:um37 is particular attractive with all different the microorganisms and raw materials used for fermentation. Now, I want to start talking about all the possible benefits of fermented skincare, but I I will do a more science orientated post later. The emulsion works perfect in harmony when used together with the sum37 time energy cream, but this is also for a later post.

Will I repurchase? No question of course, it might be expensive but 100% worth my money. I bought mine for around 40$ on eBay, its 130ml that is enough for at least 7-8 months. I'm a real S:um37 fangirl now ;) 
You can purchase it on Amazon* for ..$ / koreandepart 37$/ roseroseshop 36000W/ Jolse 40$.

Rating: 5 out of 5 bunnies 

1 = crap bin destination, would never buy again
2 = dissatisfied! product didn't work for me at all
3 = average product, but failed to impress, could repurchase
4 = good performance, satisfying results. Will repurchase if I can
5 = reached Holy Grail status in skincare, can't live without. 


  • softening 
  • oil balancing 
  • moisturizing 
  • nice scent 
  • natural fermentation
  • OMG the ingredient list, sum37 cocktail 



*This post contains some affiliate links marked with an asterix, shopping with them supports the blog 


  1. Sounds like a really promising product, and the packaging is lovely too! xxxxx


  2. Great review. Skincare products really plays an important role for our skin if choose wisely. Your poducts looks very effective, must try this once :-)

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