Is it okay to use two different serums on the face?

I have issues with acne scarring and hyper pigmentation on my skin and there are two serums that are really intriguing and I want to try out. The first is Ole Henriksen Truth Serum Vitamin C Collagen Booster serum and the other is the Kate Somerville D-Scar Scar Diminishing Serum. I know vitamin c is supposed to help with discoloration and I want to use the scar diminishing one do help with scarring. The directions on the Ole Henriksen say to use in the morning and the Kate Somerville one says to use morning and night. If I use the Ole Henriksen one only in the morning and the Kate Somerville only at night is that okay? Or should i just pick one or the other?