Name: C Firma™ Day Serum
Brand: DRUNKELEPHANT
Rating: 4.16 (25 reviews)

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This is a Health Functional Food certified by the Ministry of Food and Drug Safety (MFDS) of Korea, designed to help maintain and improve your health.

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C Firma™ Day Serum

No Whitening Effect

Leaves a Sticky Residue

Subtle Scent

Unsatisfactory Scent

Causes Allergic Reactions

Causes Breakouts

Too Watery

Increases Elasticity

Improves Complexion

Doesn't Sting

Creamy

pH-Balanced

Smooth

Adds Glow

It's best to apply this in the morning and avoid using it in the evening.

The cons are that while the scent isn't unpleasant, it's not exactly fragrant either. Also, it's a bit on the pricey side.

The pros are that it brightens up your complexion and evens out your skin tone nicely.

When considering changing your skincare routine, start by swapping this out first. Check if it suits your skin before changing other products.

For reasons unknown, it oddly causes one large blemish at a time. As someone who rarely gets blemishes, I can confidently say it's due to this product.

Among Vitamin C serums available internationally, this one ticks all the boxes for pH, tocopherol, and ferulic acid content, while being easily accessible.

I'm not sure about the whitening effect.
After applying, my face looks a bit darker. The serum color is a deep brown.
But it's fine when I apply makeup on top.

The sticky feeling was nice, it felt like a high-moisture essence.
In the morning, it absorbs quickly without any tightness, and the moisturizing power is excellent.

If you apply a cream containing peptide ingredients after this serum, the effects will be better. They say that the combination of vitamin C and peptides helps collagen production! (I'm not certain, but I think that's why Drunk Elephant also sells their Protein Polypeptide Cream as a set with this.)

💔 There is a slight stickiness and it's a bit on the runny side, so there's a slight inconvenience when applying. I pump it onto the back of my hand and then apply it to my face, but it tends to drip down my hand, so I have to hurry and spread it.

💔 I'm not sure where I can purchase it in Korea. If I have the chance to go abroad in the future, I'll buy it and bring it back.

🧡 The vitamin C content is very high, but it is absorbed gently into the skin without irritation. Other companies' vitamin-rich serums tend to sting when absorbed into the skin, but this product has no such feeling at all.

🧡 The reddish pigmentation caused by acne scars has faded. If you apply the serum consistently to the area after the acne has healed, the red scars will disappear more quickly.

🧡 This is a serum that agrees with my skin without any trouble, so I'm on my second bottle now.

The instructions say to store this in the refrigerator, so that's what I've been doing.
It feels nice and refreshing to use the chilled serum!

Since it's meant to be used in the morning, I'm a bit concerned about the brown color of the serum and whether it'll be okay to use under sunlight.
So I think I'll have to make sure to apply sunscreen as well.

*Oh, and after using this serum, applying sunscreen, and wearing a mask, the brown color from the serum seems to have transferred a bit onto my mask. Haha

I got to try this product through a friend's recommendation.
They said it's more effective than Glow Recipe products, so I decided to give it a try.
At first, I thought I only needed to use it at night since it's a vitamin C serum, but the instructions said it's a day serum, so I have to use it in the morning.
I'm not entirely sure about the effectiveness yet, but I do feel like my skin becomes more supple when I use it!

The packaging also has a twist-open design, which makes it easy and hygienic to dispense the product.

It's a bit too sticky, so I only apply it before makeup and when I'm not wearing makeup.

The abundant vitamin content can be felt in the aroma and color as well! And it applies smoothly and evenly.

Those who feel tightness after application should apply an additional layer of moisturizer.

I've developed a skin condition called 'jusa', so I can't use it as much as I'd like, only about every other day. Since the ingredients are still present, sensitive individuals should apply it sparingly and occasionally.

I was amazed by the wonderful effects when I used it long ago, so I tried it again in my 40s. While the effects were not as remarkable as in my 30s, my skin definitely looks healthier. In my 30s, I was surprised by how radiant and firm my skin became the very next day after using it.

I only tried the sample size (10ml), so I couldn't observe any long-term effects.
After using it for about 3 weeks, I didn't notice any tone improvement or whitening effects...
The scent was initially hard to get used to at first - it had a dog food-like smell...(?) But imagining it as a fermented pumpkin smell makes it more tolerable now.
It's very expensive!!!

The product has a smooth and spreadable texture. It is a watery serum that flows like water, but leaves a very sticky residue on the skin after application. 
As the name suggests, this day serum can be worn under sunscreen and makeup without pilling or shifting. It does not cause any excessive dryness either. The overall usage experience is very satisfactory.
When applied at night and slept in, the skin feels plumper and more supple the next day! Makeup also applies well on top.
For dry or sensitive areas, there is a slight stinging sensation upon application... Seems to be an effective functional product!

There's no moisturizing power, so you have to apply a moisturizer afterwards. There may be some tightness at first.

It has great absorbency and feels like taking vitamin C the moment you apply it. It seems to help brighten the complexion.

The high price is a downside.. And the formula is thinner than expected, so you have to be careful when pumping it out.

This is the most effective basic skincare product I've tried!! It's been about a week since I started using it, and my face is now glowing with radiance and feels plump. I haven't tried other vitamin-based cosmetics, but this one seems to be more effective due to its higher concentration and mild acidity.

The price is a bit disappointing, and it's a shame that you have to be very careful when applying the sunscreen, as there's a risk of pigmentation. Even in the summer, when you apply sunscreen properly, there are times when it can still get patchy. It seems like it would be better to use this in the winter.

I definitely felt my skin become smoother as soon as I started using it.
It feels a bit tight, but it's fine after applying a moisturizer on top.
I haven't noticed any brightening effects yet, but since I've only been using it for 3 days, I'll have to wait at least a month to see the results.

I'd like to try it, but if the price is too burdensome, Sephora sells a travel-sized version of the same brand's product for $23. Even though it's a smaller size, it's a serum, so I've been using it for over two months.

Honestly, I don't think there's anything to complain about the product, but the price of $80 is really daunting 😢
It's worth keeping an eye out for sales...
And if you buy it directly from Sephora, be sure to try the serum on the palm of your hand before leaving the store. I've heard there are sometimes faulty products with odd coloring. If it seems spoiled, tell the staff right away and get it exchanged.

I don't usually give full marks, but this product is so good that I can't help but give it a perfect score. Let me list the good points one by one.
1. Since it's a vitamin serum, the product can easily spoil, but the packaging is well-done, so it seems to stay fresh for a long time.
2. Every time I use it, my face feels plump and smooth. I can really feel my skin improving when I use it.
3. Definitely, using it daily seems to reduce skin troubles like acne.

Korean Reviews

C Firma™ Day Serum

2 Reviews