Kiehl's favourite serum now with more Vitamin C!
A good anti-aging serum is hard to come by. So, when you find one that works, you stick with it. Kiehl's NEW Powerful-Strength Line-Reducing Concentrate just does that. An anti-aging and radiance serum that has been my favourite serum for over a year now. BUT this month, it gets an upgrade. Kiehl's NEW Powerful-Strength Line-Reducing Concentrate now has pumped up it's vitamin C from 10.5% to 12.5%. And they also added Hyaluronic Acid (finally!). That means more radiant skin,