Powerful-Strength Line-Reducing Concentrate

I decided to try a c-vitamin serum, but found my sensitive and reactive skin broke out when trying some of the serums. I came over a reviewer that had the same experience with c vit serums that recommended this as a vit c serum. Omg! It started changing my skin within the week. So, not only does my skin tolerate it, it thrives on it. I use 3 pumps evening and mornings. I have combination skin so …Read more

The product is very thinck and it feels like the skin can never absorve it and that it doesn’t let the other products applied after that to penetrate.

This product totally changed my skin for the better.

I apply it in the evening, after my cleansing routine and before my night moisturizer. It gives my skin a real boost : gives radiance, pores are minimized, skin looks more tight and healthier overall. The effects were visible after a few days of use.

One pump is sufficient for the entire face, so a bottle goes a long way …Read more

I must admit, I love everything aesthetic about the Kiehl's Vitamin C Powerful-Strength Line-Reducing Concentrate.  The application process of this Vitamin C Concentrate is so soothing, from the texture of the product to the warming sensation, it is one of the nicest application processes of any vitamin c serums I've ever used.  It doesn't sting at all but it just so slightly warms your skin as you smooth this over your face.  This absorbs nicely yet leaves skin feeling so soft and moisturized.

This is one of the first Vitamin C products I'd ever used (along with the SkinCeuticals Ferulic + C Serum) so it does make me sad to criticize it...  I really wish that Kiehl's had chosen to leave out the fragrance ingredients that they have …Read more

I had a lot of hopes for this product based on liking other kilehls products in the past. However, I really don't think this product does much. The texture is very strange, very similar to pore minimizing primers like Benefit's, and I feel that's the actually what makes you look like you have less wrinkles. I don't actually think it does anything to minimize wrinkles when …Read more

I'm a Kiehl's devotee and borderline obsessed with their products, and I wanted to love this so bad. I absolutely love what this does with my skin. When you apply it it feels like your skin is turning into velvet right under your hands, it's amazing. And it truly brightens and lights up your skin. Unfortunately I seem to be allergic or sensitive to it and every time I've tried …Read more

I am reviewing the brand's updated serum version that has 12.5% Vitamin C and Hyaluronic Acid.

The old version might have had a few issues associated with it, however, I think Kiehl's did a better job this time round. I am very sensitive to all things Vitamin C, but this is hands down the only serum I can tolerate.

This serum works well for all skin types, even …Read more

I wanted not to love it bc of the price point, but dang this stuff is good and honestly will last you for months. You need very little. When initially applied, you get a slight warming sensation which goes away quickly. I wear it in pm. I swear I see results overnight...literally. My skin looks even, brighter; just overall better. It does not add moisture to my skin so I apply over this and …Read more

Was looking for a Vitamin C product and decided to try this.

This item has been updated - 2018 version with 12.5% Vitamin C.

I also got the Deciem The Ordinary Vitamin C Suspension 23% to compare.

I like Kiehl's for the texture - it has silicone and spreads easily.
(But salesperson claimed that it is the 'good type' of silicone. Wonder what …Read more

I have been using this for about 5 years now. It makes my skin softer, more even and my nasolabial lines are much less pronounced. I tried to swap it out for a cheaper serum but, it was not as good as this, so even though Kiehls is pricey, I will keep re-purchasing.