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Summary
Conscious Beauty at Ulta Beauty™
- Vegan
- Clean Ingredients
- Sustainable Packaging Brand
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The Powerful-Strength Line-Reducing Concentrate is a potent vitamin C serum by Kiehl's Since 1851 that is formulated with 12.5% vitamin C and hyaluronic acid.
Benefits
- Instantly boosts radiance
- Helps visibly reduce lines and wrinkles in just 2 weeks, while helping firm skin over time
- Smooths skin's texture and helps visibly minimize the appearance of enlarged pores
- Stabilized Vitamin C penetrates skin's deeper surface layers and remains effective in skin for up to 6 days
- Dermatologist-tested for safety
Key Ingredients
- Pure Vitamin C: a highly efficacious antioxidant known for its ability to improve the appearance of skin aging; known to help boost radiance, improve texture, and visibly reduce the appearance of lines, wrinkles, and other signs of aging
- Vitamin Cg: a vitamin C derivative that activates once absorbed into the upper layers of the skin's surface; with antioxidant benefits, it's frequently used in anti-wrinkle skincare products to help reduce facial lines over time
- Fragmented Hyaluronic Acid: acts like a sponge and draws moisture into skin's surface layers and expands as it absorbs; it is known to help smooth and plump and is commonly used in skincare products intended to visibly reduce facial lines and refine texture
- Cleanse skin thoroughly prior to application
- Apply over entire face, avoiding the eye area
- As formula blends into skin, you may experience a feeling of warmth
- Can be used twice a day, morning and night
Propylene Glycol, Dimethicone, Glycerin, Ascorbic Acid, Ethylhexyl Palmitate, Cetyl Peg/Ppg-10/1 Dimethicone, Dimethicone Crosspolymer, Ascorbyl Glucoside, Cyclohexasiloxane, Hydroxyethylpiperazine Ethane Sulfonic Acid, Lauroyl Lysine, Acrylonitrile/Methyl Methacrylate/ Vinylidene Chloride Copolymer, Polysilicone-11, Adenosine, Hydrolyzed Hyaluronic Acid, Limonene, Isobutane, Citrus Aurantium Dulcis (Orange) Peel Oil, Citrus Limon Peel Oil/Lemon Peel Oil, Citral, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate.
This brand is excluded from most Ulta Beauty coupons.
Free gift with purchase
Free gift with purchase
Free Crème De Corps body moisturizer with $45 Kiehl's Since 1851 purchase (valid thru 5/11/25 on shipped purchases only. Full or partial pickup or same day delivery purchases do not qualify. While quantities last)
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Questions
Ask a QuestionQ&A
Showing 5 out of 21 Questions
- Q
Can this be used with retinol ? And if yes how to apply in what order?
- Asked by Mo
- Official Answer By Kiehl's - BEHello there! Thank you for asking about Kiehl's Since 1851 Powerful Strength Line Reducing Concentrate! We do not recommend laying this product with retinol. We recommend Powerful Strength Line Reducing Concentrate in the AM and Retinol in the PM. We hope that this information has been helpful.Was this answer helpful to you
- Q
From what age you can suggest to use this product? Is it 40, 50 or 60 years old and up? Thank you
- Asked by Lizzay
- Official Answer By Kiehl's - BEHello there! Thank you for asking about our Kiehl's Since 1851 Powerful Strength Line Reducing Concentrate! This is a potent Vitamin C Serum by Kiehl's formulated with 12.5% Vitamin C and Hyaluronic Acid! It is suitable for All Skin Types, including Sensitive Skin. If you are looking to boosts radiance, helps firm skin and visibly diminishes fine lines, wrinkles and pores for smoother-looking skin, this would be a great addition to your skincare regimen. We hope that you try it out soon.Was this answer helpful to you
- Q
what products do yoou have for deep wrinkles not just wrinkles and lines?
- Asked by Lliz
- Official Answer By Kiehl's - BEHi there! We appreciate your interest in our products. We have many products that target deep wrinkles! Our Super Multi-Corrective Anti-Aging Cream For Face And Neck, Micro-Dose Anti-Aging Retinol Serum With Ceramides And Peptide, Fast Release Wrinkle-Reducing 0.3% Retinol Night Serum, and Powerful Wrinkle Reducing Eye Cream are a few that target deep wrinkles. We recommend calling our toll free number or visiting one of our stores for assistance picking a product.Was this answer helpful to you
- Q
Is this an AM or PM use product?
- Asked by Lizlipsticks
- Official Answer By Kiehl's - BEHello there! Thank you for asking about Kiehl's Since 1851 Powerful Strength Line Reducing Concentrate - 2.5 oz! This serum can be used twice a day, morning and night. We hope that you try it out soon!Was this answer helpful to you
- Q
Is this product fragrance free?
- Asked by Kay
- Official Answer By Kiehl's - BEHi there! Thank you for inquiring about our Powerful Strength Line Reducing Concentrate. This product is a potent Vitamin C serum formulated with 12.5% Vitamin C and Hyaluronic Acid that visibly diminishes fine lines in just 2 weeks. It is only Paraben-Free, Alcohol-Free, Mineral oil-free,and Dye-free.Was this answer helpful to you
Reviews
Write A REVIEWReview Snapshot
by PowerReviews
Ratings Distribution
Best Uses
- 1After a home facial
- 1Everyday
- 1Nightly
- 1Face
- 1Nighttime
Describe Yourself
- 1Beauty Conscious
- 1Normal to Dry Skin
- 1Great skin, but and use many different products
- 128 Female, Dry Skin, Esthetician and Pro MUA
- 134 year old
Skin Type
- 1Dry
- 1Normal
Most Helpful Positive Review
Finally...Something that does what it says!!
I received the Line reducing concentrate as a gift and I must say, its one of my most treasured beauty products. After the first few days the tone and texture of my skin had a noticeable improvement. I have some discoloration on my forehead, right at the hairline, from sun worship that has faded dra...
Most Helpful Critical Review
BEWARE OF THE NEW 3.4 OZ SIZE BOTTLE
I am a devoted fan of this serum. It has saved my skin! I recently stopped into my local Kiehl's for yet another bottle and the salesperson immediately directed me to their new 3.4 oz bottle (for $100). I was delighted at the thought of more product for less dough! HOWEVER, I got it home and after p...
1015 results
Favorite Vitamin C Treatment
I tried another treatment because this is a bit pricey but I came back. I love the tingling that I feel from the Vitamin C. Not sure if that means there is more concentrate than compeditors🤷♀️. Goes on easy and smooth and I don't need to use a lot.
It's almost like magic in a bottle!
Verified Reviewer
Reviewed at
Without a doubt Kiehl's Vitamin C Serum is the very best. My skin is smoother and brighter in a way that almost seemed unreal. I honestly wondered if I was imagining the difference being so noticeable until I visited family I'd not seen in a few years. I was actually asked if I had had work done. That visit ended with two family members buying Kiehl's Vitamin C Serum! My skin looks better than it did when I was in my 30's! I love this serum so much!
Sunshine in a bottle
Verified Reviewer
Reviewed at
Repeated use has cleared my skin and made my coloring more even. I have a healthy glow.
Great for Senstiive Skin
Verified Reviewer
Submitted as part of a sweepstakes entry
Reviewed at
This product has been great. I have very sensitive skin and this has not caused any irritation!
Love it
Verified Buyer
Submitted as part of a sweepstakes entry
Reviewed at
Love the product, has a nice creamy feel to it. Best part, it worked well under my make up.
