Skip to content

Kiehl’s Powerful-Strength Line-Reducing Concentrate 30 Day Review

Kiehl’s Powerful-Strength Line-Reducing Concentrate uses some amazing skincare ingredients to help reduce fine lines and wrinkles and in this 30 day skincare product review, we’ll review how effective Kiehl’s Vitamin C serum is by comparing the before and after 30 day results!

Will the 30 day results show why Kiehl’s Powerful-Strength Line-Reducing Concentrate with Vitamin C is one of their best-selling skincare products?

Also, how fast does Kiehl’s Vitamin C serum start to show noticeable improvements to the skin?

Let’s find out!

Kiehl's Powerful-Strength Line-Reducing Concentrate Product Photo

What skincare ingredients are used in Kiehl’s Powerful-Strength Line-Reducing Concentrate Vitamin C serum?

Of course, the main active skincare ingredient in Kiehl’s Powerful-Strength Line-Reducing Concentrate is Vitamin C.

Vitamin C is a popular addition to many skincare products because it’s effective and helps the skin in many different ways.

However the Vitamin C used in this serum is a bit special because Kiehl’s actually developed and patented their own water-free Vitamin C, formulated with 10.5% L-Ascorbic Acid and 2% Ascorbyl Glucoside.

What does this mean?

Simply, it means that Kiehl’s Vitamin C is much more stable and absorbs efficiently deeper into the skin so that this serum is effective for much longer![1]

Kiehl's Powerful-Strength Line-Reducing Concentrate Label Closeup

Vitamin C is an extremely effective skincare ingredient and Kiehl’s completes this serum by adding moisturizing skincare ingredients such as:

With all these effective skincare ingredients packed into this serum, does Kiehl’s Powerful-Strength Line-Reducing Concentrate help reduce fine lines and wrinkles in as little as 2 weeks?


60 DAY SKINCARE PRODUCT REVIEW

Crows feet and wrinkles around eyes before using Dermalogica Multivitamin Power Serum

Can vitamins really improve crow’s feet and deep wrinkles around the eye?

See how Dermalogica Multivitamin Power Serum completely transforms skin in just 60 days!


How good is Kiehl’s Powerful-Strength Line-Reducing Concentrate for wrinkles in 30 days?

For this 30 day skincare product review, we use a very simple skincare routine to see how effective Kiehl’s Vitamin C serum really is:

Remember, we use minimal skincare products for our reviews to see how these products really affects the skin and if the improvements to the skin are actually noticeable.

With that in mind, let’s see if using Kiehl’s Vitamin C serum for 30 days delivers some spectacular results!


180 DAY SKINCARE PRODUCT REVIEW

Deep Acne scars on face before using The Ordinary AHA 30% + BHA 2% Peeling Solution

Is it possible to improve old acne scars using skincare products?

We use The Ordinary AHA 30% + BHA 2% Peeling Solution for 6 months to find out!


Results after using Kiehl’s Powerful-Strength Vitamin C Serum for 2 weeks

For this skincare product review, we apply Kiehl’s Vitamin-C serum to the left pinky finger.

So, is 2 weeks enough time to start seeing visible improvements to fine lines on the skin?

Surprisingly, yes!

Fine lines and wrinkles on pinky before using Kiehl's Powerful-Strength Line-Reducing ConcentrateFine lines on Pinky finger after using Kiehl's Powerful-Strength Line-Reducing Concentrate for 2 Weeks
Wrinkles and fine lines on skin 2 weeks after using Kiehl’s Powerful-Strength Line-Reducing Concentrate.

After 2 weeks of daily serum application, there really is a noticeable improvement in the fine wrinkles and the smoothing around the cuticles.

It’s clear that the skin cells are looking more “plump”, leaving the skin more textured.

Even though the lighter wrinkles are smoothing out, it seems to be too early to see improvement in the deeper joint wrinkles.


REAL SKINCARE REVIEWS, REAL RESULTS

Subscribe to Skincare Weeklies to stay up-to-date on your favorite skincare products!


    Kiehl’s Powerful-Strength Line-Reducing Concentrate Before and After 30 Day Results

    It’s easy to see why Kiehl’s Powerful-Strength Vitamin C serum is a fan favorite and one of their best-selling skincare products.

    This serum delivers some spectacular results!

    Fine lines and wrinkles on pinky before using Kiehl's Powerful-Strength Line-Reducing ConcentrateFine lines and wrinkles on pinky finger after 30 days using Kiehl's Powerful-Strength Line-Reducing Concentrate
    Fine lines and wrinkles on pinky finger before and after using Kiehl’s Powerful-Strength Line-Reducing Concentrate for 30 days!

    The “plumpness” is even more apparent after 30 days and also notice how the skin is much more texturized and smoothed out.
    Even the deeper wrinkles on the joints looks to be shallower and more hydrated.

    However, we noticed something completely unexpected.

    Kiehl’s Powerful-Strength Line-Reducing Concentrate completely lightens the skin as well!

    We didn’t expect to see such a noticeable difference, but the lighter skin tone is obvious in natural daylight.

    This shouldn’t have been that big of a surprise though because Vitamin-C is an excellent skincare ingredient commonly used in brightening serums because of it’s skin lightening properties.

    After seeing these results, we recommend applying this product evenly to the entire skin, not just spot treating problem areas!
    (Ex: Forehead, crowfeet, 11’s, laugh lines, wrinkles on neck etc..)


    90 DAY SKINCARE PRODUCT REVIEW

    Hyperpigmentation Dark Spot on facial skin Before Using Caudalie Vinoperfect Radiance Serum

    Does skincare products really help lighten dark spots and hyperpigmentation?

    We use Caudalie Vinoperfect Radiance Serum for 90 days and the transformation is unbelievable!


    Kiehl’s Powerful-Strength Line-Reducing Concentrate Product Review

    After using this Vitamin C serum for 30 days, here’s a few things we noticed that might help you deicide if Kiehl’s Powerful-Strength Line-Reducing Concentrate is right for your skincare routine:

    Is there a warming sensation when using Kiehl’s Powerful-Strength Line-Reducing Concentrate?

    Surprisingly, there is a “soft glowing” feeling that occurs when using this Vitamin C serum.
    It’s not an irritation, rather a warming sensation caused by the skincare ingredients activating when the serum is being applied to the skin![1]

    Does Kiehl’s Powerful-Strength Line-Reducing Concentrate leave any sticky residue on the skin?

    This serum applies smoothly and completely absorbed within 15 minutes!

    No sticky residue formed on the skin after application.

    Is there any fragrance in this Vitamin C serum?

    There’s a noticeable citrus scent when using this skincare product.

    However, it isn’t overwhelming or perfumy and the scent dissipates after a few minutes!

    Where can I store Kiehl’s Powerful-Strength Line-Reducing Concentrate?

    Remember, Vitamin C is extremely sensitive to heat and light and these elements can actually cause the skincare ingredient to oxidize and become less potent.

    To keep this serum effective and “fresh” for as long as possible, be sure to read our guide on storing skincare products!

    Does this serum cause any discoloration?

    While Kiehl’s Vitamin C serum visibly improved skin texture and brightness, we noticed that this serum has an interesting effect on the fingernails.

    Try to avoid getting this serum on the fingernails to avoid discoloration.

    Kiehl's Powerful-Strength Line-Reducing Concentrate Front Label

    Subscribe to Skincare Weeklies today!


      Disclaimers

      • This is not a sponsored post and the featured product was purchased using our own funds.
      • We hope you use this information to help you create your own skincare routines.
      • This is not medical advice so if you have any questions regarding your skin, please consult with your dermatologist!
      • Remember, these are our results and yours may differ as skincare products affects all skin differently.

      30 DAY SKINCARE PRODUCT REVIEW

      Skincare Products Reviewed By Skincare Weeklies Group 2020

      Which skincare products showed the biggest improvements during our reviews?

      These are the top skincare products that completely transformed the skin!


      30 DAY SKINCARE PRODUCT REVIEW

      Closeup of Blackheads on the Right side of Nose

      Cleansing oils are amazing for removing makeup and sunscreen but can it remove blackheads as well?

      See how DHC Deep Cleansing Oil clears the skin in 30 days!


      SKINCARE PRODUCT REVIEW

      Left Arm Skin with Keratosis Pilaris Bumps Closeup

      Do you have “Chicken Skin”?

      See which skincare products with AHA/BHA improves skin affected by Keratosis Pilaris!