A hydrating serum.Kickstart your skin’s hydration cycle with the Dermalogica Circular Hydration Serum. This longlasting serum immediately floods the skin with hydration; replenishes from within and helps to prevent future dehydration. Enriched with a powerful blend of deeply hydrating hyaluronic acid; replenishing polyglutamic acid; dehydration preventing amino acids plus a postbiotic blend of lactobacillus ferment and avena extract to help balance skin’s microbiome; you need this serum in your skincare routine.