This potent night serum will have you singing the blues — it won’t make you look like a Smurf, but it will smooth fine lines, repair damage, and strengthen the skin barrier while you sleep. Klairs’ tantalizingly named Midnight Blue Youth Activating Drop is formulated with powerful growth factors (EGF and FGF) to work not just on the surface of the skin but deep below to address the causes of fine lines. Featuring only 10 ingredients to give your skin only what it needs, this night serum fights free radicals, boosts collagen, and soothes skin irritated by UV rays, acne, and external stressors with blueberry extract, adenosine, and guaiazulene.


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Apply 3-4 drops on face after your toner step at night. Pat in for absorption.

RH-Oligopeptide- 1, RH-Polypeptide- 1, Butylene Glycol, Vaccinium Angustifolium Blueberry) Fruit Extract, Sorbitan Sesquioleate, PEG-60 Hydrogenated Castor Oil, Chlorphenesin, Guaiazulene, Ethylhexylglycerin, Adenosine

This apothecary style skincare brand offers effective products, especially for sensitive skin types, while respecting the environment. That means they keep their ingredient lists as minimal as possible and never include colorants, alcohol, parabens, or artificial fragrances. In line with their “simple but enough” philosophy, Klairs relies on time-tested, clinically approved ingredients to offer a slow and steady skincare regimen that improves skin’s health and reduces irritation. From their Supple Preparation Facial Toner to their Freshly Juiced Vitamin Drop, Klairs is a brand that relies on word-of-mouth marketing, and as such, they’ve been able to provide high quality products at a reasonable price since 2009.

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I both this product for myself and my mom (she is 55 y.o.). I haven't seen much difference, only my skin was not itchy and eczema was recovering much faster, but my mom!!...she looks really younger! The skin is fresh, fine lines are not that deep and the skin is not dull. She was a bit worried about the fact that is is not oily, but very watery (this is only 1 thing that might be con)...I definitely recommend this product to all skincare enthusiasts within the wide age range.

This is a nice lightweight serum that absorbs quickly but I don't find it does much besides soothe some redness (not a lot). After using one bottle I didn't notice a big difference.

I have been using this for about a month together with other new products and so far the fine lines on my forehead seem to be a wee bit less obvious. I like how gentle this product feels. But I’m just a bit confused as to when to use it. I put it on after Sulwhasoo First Care Activating Serum and before the other essences since the texture is very watery. At which step do you guys use it?

I was always a little skeptical of this product because it looked super watery but I've seen some people mix oils into this and it looked awesome that way too! I love mixing my oils with watery products to create my own little emulsion lol

Yes it is super watery which makes it feel like it can’t be working very much! I put on a few drops more than recommended just to make sure lol! But I must say that one noticeable effect of this serum is that it had most likely calmed quite a bit of the redness. Let me know how it goes with the mixing! I’m been veering away from oils because the few times that I tried to put on an oil based serum, I get little zits on my face the next day =\

Very nice for fine wrinkles and frankly, I love Klairs' range of products. In response to the comments found everywhere on the internet, yes, it can be runny but there is always a solution. 1) A few drops in your palm then patting with your fingers 2) Simply leaning your head back and letting a drop fall on the area and capturing it with your palm or finger.
I will certainly buy this product again. Also, you just have to love a product that doesn't leave stickiness!

I got this Klairs drop about 3-3.5 weeks ago now, but I put off writing a review because for the first 2 weeks or so I wasn't seeing a change and I wanted to give it a chance.

I'm glad I did! After about the second week of checking my eyes and mouth lines for change every day or so, I kind of gave up expecting anything to happen and stopped checking... But I decided I was going to finish the product anyways.

Then today I looked at those spots that I get fine lines/wrinkles, and they were noticeably dimished! The ones... Read more

I wanna see more reviews about this product before I give it a try :)

Wow this gorgeous has been working magic on my skin... bought a bottle last Dec. Wanted to get it again, but unfortunately it's out of stock T_T

I want to give this one a try...maybe i will put it on my cart the next time i will order...coz klairs freshly juice vitamin drop and the klairs supple toner work for me

I have read very good reviews about Klairs' products.. and this serum really sounds good! is anti wrinkles! it promises.. well, this will be my next purchase, for sure.