Review – Can Kiehl’s Line Reducing Eye-Brightening Concentrate Reduce My Dark Circles?


I’ve managed to obtain 2 packets of Kiehl’s Line Reducing Eye-Brightening Concentrate 5ml samples while I was shopping for Kiehl’s products the other day.

Kiehl’s Line Reducing Eye-Brightening Concentrate, with 10.5% Pure Vitamin C and Haloxyl, is said to help decreases the appearance of crows feet and sub-orbital wrinkles. Visibly brightens the eye area and minimizes dark circles.

Product claims

This line-reducing concentrate is formulated for the eye area and contains a high concentration of 10.5% Pure Vitamin C (L-Ascorbic Acid) known for its affinity with skin and its powerful ability to improve the appearance of skin aging. With Haloxyl, this formula helps to reduce the appearance of under-eye dark circles, helping to brighten the overall eye area for a fresher appearance. With continued use, our treatment helps address some of the more serious signs of skin aging with a significant effect on sub-orbital wrinkles and crows feet.


One of its key ingredient, Ascorbic Acid (vitamin C) with content in 10.5%, is known to help for the production of collagen and elastin. This antioxidant ingredient also prevents water loss and therefore maintains the skin’s barrier function. Instability is the main setback for this beneficial ingredient, which can be irritating to the skin. That is why some doctors believe it is not recommended to use around the eye area.

Haloxyl, a new patented key ingredient, is claimed to improve skin around the eye area by stimulating natural enzymes that help strengthen under-eye area capillaries.

Kiehl’s Line Reducing Eye-Brightening Concentrate also contains skin irritant ingredient like Bitter Orange Flower Extract, which oil is extracted from the petal of the bitter orange tree and is claimed to be effective at stimulating cutaneous tone.


What puzzled me most when I first encountered with Kiehl’s Line Reducing Eye-Brightening Concentrate, is this hot burning sensation I felt on my eye area. It is quite weird and scary in fact. This sensation, which lasts for a few minutes each time, gradually diminishes after 2 weeks. Till now, I’m still wondering what is the cause of it. 

Occasionally, I will also encounter some temporary skin itchiness around the eye area. I believe it may be due to the instability of Vitamin C or skin-irritant ingredients in it.

As Kiehl’s Line Reducing Eye-Brightening Concentrate is considered a serum to me, I will top up with lightweight eye cream over it.

After a month of usage : I have noticed the fine lines especially below my eyes area have insignificantly reduced. Fine lines appear softer, skin becomes firmer and tone. But as for crow’s feet and dark eye circles, sad to say there’s only very faint improvement on them. 


Will I buy it? Maybe


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