A focused review of Dermaceutic TriVita C30 and Activ Retinol The use of serums is fast increasing as a basic step in any skincare routine, but what is a serum and how can it assist with your skincare concerns? What is a serum? A serum is a light gel to fluid consistency product containing a high level of very active ingredients designed to penetrate through the stratum corneum (outermost layer of skin cells) and deliver a high level of efficacy. This is due to a smaller par