Although we are all for a product that has a built-in sunblock, what most people are unaware of is that the sunblock actually blocks key actives in the product from absorbing into the deeper layers of the skin – so you might be protected but you are receiving no anti-ageing benefit. Dr Gobac therefore rather advises that you apply its SPF25 after the starter cream to avoid blocking the absorption of the Starter Cream’s highly concentrated ingredients. – Dr. Gobac