I ran out of vitamin c serum and got this to replace it. I like the vitamin c one better than my last, it’s more moisturizing and the addition of vitamin e is nice. It’s also a really good price point for how much product you’re getting. That being said, I don’t know what I’d use the Hyaluronic acid alone serum for, it seems superfluous. I may use it on the beach or by the pool during the summer as it’s a good light moisturizing serum. I also wish they included the % of active ingredient like other products do. I haven’t seen any outsized effects so far (after about 3 weeks of use) so I doubt the % amount of vitamin c or retinol is very high.