[Review] Kiehl’s Powerful-Strength Line Reducing Concentrate


Kiehl's Powerful Line Reducing Concentrate Serum Vitamin C

Due to limited available time, I haven’t been doing much product reviews lately. Managed to review one of my favorite products a few days ago and it’s the Kiehl’s Powerful Strength Line-Reducing Concentrate. Good things are meant to be shared! :D


Product Profile

  • Formulated with a 10.5% Pure Vitamin C, Powerful Strength Line-Reducing Concentrate is clinically demonstrated to improve overall skin texture, tone and radiance while reducing the appearance of lines and wrinkles
  • Superior results over Retinol at 8 weeks on skin texture, tone and lines and wrinkles.
  • Gives your skin a triple boost by stimulating collagen production, providing anti-oxidant protection and exfoliating skin to reveal healthier-looking skin.
  • Use both day and night under your ideal moisturizer.



L-Ascorbic, also known as Pure Vitamin C, is said to be one of the few topical agents whose effectiveness against wrinkles and fine lines is backed by a substantiates amount of reliable scientific evidence. It improves collagen production and provides antioxidant protection from skin damaging free-radicals. However, the practical use of vitamin C in skin care presents some difficulties due to its lack of stability. When exposed to air, Ascorbic Acid solution undergoes oxidation and it will lose its effectiveness.

There are many Vitamin C derivatives in the market however not much reliable scientific evidences were given.

Kiehl’s Powerful-Strength Line Reducing Concentrate also contains Glycerin that acts as a humectant or emollient to absorb moisture from the air and thereby helps the skin retains its moisture.



If you are looking for a stably packaged Vitamin C serum, this Kiehl’s Powerful-Strength Line Reducing Concentrate will be a good option. As Ascorbic Acid is pretty unstable, once exposed to air, it will oxidize hence it is important to have a well-sealed packaging. Hence Kiehl’s Powerful-Strength Line Reducing Concentrate scores well on the packaging.

Kiehl's Powerful Strength Line Reducing Concentrate

The thing I like most about this product is the high concentration of Pure Vitamin C – 10.5% Ascorbic Acid. I’m a big fan of L-Ascorbic Acid and is my favorite ingredient to combat fine lines and wrinkles! :D I have sensitive skin and my skin is actually more tolerant to Vitamin C than Vitamin A.

On my first few usages, I actually feel a mild burning sensation that lasts about a minute. The sensation gradually disappears after about two weeks of usage. Upon a few weeks of usage, I notice a slight improvement, the fine lines on my forehead and the nasolabial folds are less visible and skin tone is more even.



Will I buy it again? Yes


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