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 its brightening effects. After application, my face looks slightly darker due to the serum's deep brown color. However, it's fine once you apply makeup over it.

I loved how it felt like a deeply hydrating essence, with a rich texture. When applied in the morning, it absorbs completely without any tightness, leaving skin incredibly moisturized. The hydration power is top-notch!

Applying a cream containing peptides after this serum enhances its effectiveness. It's said that the combination of vitamin C and peptides aids in collagen production! (While not certain, I think this might be why Drunk Elephant sells it as a set with their Protini Polypeptide Cream.)

It's slightly sticky and a bit runny, which can make application a tad inconvenient. When I pump it onto the back of my hand before applying to my face, it tends to drip, so I need to apply it quickly.

I'm not sure where to purchase it domestically. I plan to buy it again when I have the opportunity to travel abroad.

The vitamin C content is very high, yet it absorbs gently without irritating the skin. Unlike other brands' high-concentration vitamin serums that can cause a stinging sensation, this product doesn't have that effect at all.

It has helped fade red pigmentation from acne scars. Consistently applying the serum to areas where acne has healed makes the reddish marks disappear faster.

This serum works well without causing any blemishes, which is why I'm currently using my second bottle.

The instructions say to store it in the refrigerator, so that's what I do! It feels nice and cool when applied!

Although it's meant to be applied in the morning, I'm a bit concerned about its brown color and whether it's safe to use in sunlight. Because of this, I feel like I definitely need to apply sunscreen afterward. Oh, and I noticed that after applying this serum and sunscreen, then putting on a face mask, some of the brown color from the serum transferred onto the mask!

I started using this product after a friend recommended it. They said it was more effective than Goodal products, so I decided to give it a try. At first, I thought I should only apply it at night since it's a Vitamin C serum, but after reading the instructions, I realized it's actually a day serum meant for morning use! While I'm not entirely sure about its effectiveness, I do feel that my skin becomes more firm and elastic when I apply it. Plus, the packaging has a twist-and-pump design, which makes it convenient and hygienic to use!

It's on the stickier side, so even though it's a day serum, I only apply it when I'm not wearing makeup. I skip it before putting on makeup.

You can really sense the rich vitamin content from the scent and color! It also absorbs with a nice, firm texture.

If you experience deep dryness after application, layer on some extra hydration

Due to a skin condition called rosacea, I can't use it as freely as I'd like, so I apply it every other day. Given its potent ingredients, those with super sensitive skin should use it sparingly and occasionally.

I used this product years ago with amazing results, so I decided to try it again in my 40s. While the effects aren't as dramatic as they were in my 30s, it definitely makes my skin look healthier. Back then, I was amazed at how it gave me an instant glow and firmer skin the very next day.

I've only used a sample (10ml), so I can't speak to long-term effects.
Used it for about 3 weeks but didn't notice any improvement in skin tone or brightening...

The scent took some getting used to at first... It's kind of like dog food smell...? Now I imagine it as fermented pumpkin, which helps a bit.
It's expensive!!!

Absorbs well. The texture is a thin, watery serum, but it leaves a surprisingly sticky feeling on the skin. 

True to its name as a day serum, there's no pilling or issues when applying sunscreen and makeup over it. It didn't cause any extra dryness either. Very satisfying in terms of user experience.

When applied at night, the next morning my skin feels noticeably firmer! Makeup seems to go on better too.

When my skin is dry or sensitive, I feel a slight burning sensation after application... It definitely feels like an active product!

It lacks hydration, so you definitely need to follow up with a moisturizer. You might experience some tightness at first.

It absorbs well and the moment you apply it, your skin feels like it's drinking in vitamin C. It seems to help brighten your complexion.

The price is the only drawback.. Also, the texture is thinner than expected, so you need to be careful when pumping it out.

Out of all the skincare products I've tried, this one has shown the most noticeable results!! It's been about a week since I started using it, and my face has a radiant glow and feels so much firmer. I haven't tried other vitamin-infused products, but this one has a much higher concentration and is slightly acidic, which seems to be why it's so effective.

Korean Reviews

C Firma™ Day Serum

2 Reviews