Can I use Niacinamide 10+1 with Clearly Corrective Dark spot solution?

[SyedMozaher]

Hi!!

So I've been using the  Kiehls Clearly Corrective Dark Spot solution for months now. Recently, I started using Niacinamide 10+1 by the Ordinary by recommendation of my sister. I was just wondering, is it safe to use both? Because I still have like 2/3 of the Clearly Corrective left so I've been using both of them. But I was wondering if any of them off-sets the other? The Ordinary Niacinamide 10% + Zinc 1% Oil Control Serum   Kiehl's Since 1851 Clearly Corrective Dark Spot Correcting Serum 1.7 oz/ 50 mL 

Thanks!