Each of our Customers' Reviews of Dermalogica Skin Hydrating Booster 30ml can be found below and you can be assured of their authenticity: we only allow customers who have bought the product from us to write a Product Review about it.
I use this booster when my skin gets a little dry, either as a thin layer under moisturiser or a couple of drops added to my moisturiser. Usually only need to use it for a few days at a time.