I have been using Kiehl’s Powerful-Strength Line-Reducing Concentrate for over 8 weeks now, and it’s time to share how it has worked for me. In general, this is a stable vitamin C serum with a simple ingredient list. Over the 8 weeks however, I can’t say I have witnessed much difference!
Kiehl’s Powerful-Strength Line-Reducing Concentrate comes in two sizes (50ml and 75ml. The 50ml bottle goes for 55 euros in Belgium). It claims to reduce wrinkles around the eye area, Marionette lines, and improve skin appearance as well as texture. It comes with a pump. However, the bottle is not fully-opaque, which doesn’t shield the vitamin C from the light quite as effectively.
The serum is white when it is pumped out. Upon spreading it out, you will see white bits floating in translucent liquid. It doesn’t really have a smell (or rather very faintly so, not from fragrance but from the ingredients themselves). Now here’s the thing: I don’t care too much about “texture” when it comes to products in my nighttime routine. With that said, after a couple of trials, I decided not to use this serum all over my face. I might be alone in this, and I know very well that silicone doesn’t really do any harm, but I can’t get over how this serum feels like a film sitting on the surface of my skin. I have been using it on my neck, under my eyes (there is a fine line under my right eye), and on the “lines” next to my nose instead.
Upon application, the areas instantly look and feel smoother. I would say it is moderately hydrating on its own as well. However, after 8 weeks, I don’t think it has really made a difference. The plumping and filling effect mostly comes from silicone, which doesn’t last. As soon as I wash my face or skip it for a day or two, I can see clearly there has been no lasting improvement. I’m not sure if it has brightened my skin, either.
Here is the ingredient list:
Bottom line: Vitamin C is a tricky ingredient to keep stable, and I have seen many vitamin C serums with worse compositions. In other words, if you want to try a vitamin C serum, Kiehl’s Powerful-Strength Line-Reducing Concentrate isn’t a bad option. I personally however, cannot say I have witnessed a miracle or even small improvement here. Let me just say there are other products in my arsenal that I prefer to achieve brighter, hydrated, and plumper skin with!
Have you tried Kiehl’s Powerful-Strength Line-Reducing Concentrate? Is it a hit for you? Something else that irks me a little with this one is what is written on the packaging. The * after Clinically-Demonstrated states “with Continuous Delivery of 10,5% Pure Vitamin C.” It’s a bit misleading, as while continuous delivery of 10,5% pure vitamin C has been clinically demonstrated to do all the wonderful stuff it promises, this says nothing about this particular serum.
Sunny, your beauty culture translator xx