If you're yet to meet the Smart Response serum from Dermalogica, then allow us to make the introductions. Designed to deliver a personalised response to the skin, the formula is infused with the brand's SmartResponse technology. What's the SmartResponse technology? Well, it's a combination of four innovative actives that recognise micro changes in the skin and intelligently address any concerns before they're visible to the naked eye. Pretty neat, right?| Dermalogica Smart Response serumApplication: apply each morning and night after cleansing and toning. Allow one minute for product absorption. Follow with your prescribed Dermalogica moisturiser or SPFSkin type: suitable for all skin typesVeganCruelty-free30mlFor hygiene reasons, this product cannot be exchanged or refunded, unless faulty.'