Review title is My serum was pale yellow [SEP] Based on all of the positive reviews, I was excited to try this serum. But when I received it, it was a pale yellow. That is a key indicator that the Vitamin C is past its freshness date. I used it a couple of times, and really saw no difference. So I returned it--no reason to pay $24.95 for a product that may no longer be effective. I bought an alternative product.