The short answer
Buy it if you will use it every night for three months and judge it at the end of that, not in week one. It is a hydrating night serum that works slowly, and $109 buys you the patience to find out whether slow suits you.
Skip it if you want something you can see working, or if you are still without a sunscreen. Daily SPF changes more about how skin looks in a year than any serum at any price.
What Advanced Night Repair actually does
A lightweight nighttime serum with hyaluronic acid that sinks in before your moisturiser goes on. It works on a scale of weeks rather than days, and at $109 that patience is the real cost.
That last part is the whole review. A serum built on hyaluronic acid holds water in the top layers of skin, which shows up as skin that looks less tired and takes makeup better. It is real, and it is not dramatic. Anything promising dramatic in a fortnight is selling you an acid or an illusion.
Amazon Australia buyers have it at 4.5 / 5, which is a respectable number for a product at this price, and it sits at $109 today.
Is it worth $109?
Work it as a monthly cost rather than a purchase. Used nightly, a bottle of serum is a few months of use, so the question is whether you want to spend that every quarter for the rest of your life, because a serum only works while you are using it. If the answer makes you wince, the answer is no, and no amount of reviewing changes it.
What the money buys, honestly: a texture that sinks in fast without pilling under a moisturiser, a formula that has been on shelves long enough to be well understood, and a scent and feel that make people finish the bottle. Finishing the bottle matters more than the ingredient list, because the product you actually use beats the better product you abandon.
What it does not buy: retinol-grade change. This is not that kind of product and does not claim to be.
Who should buy something else
If your skin is reactive, start with barrier repair rather than a serum. If it is dehydrated and calm, the cheapest thing in this category, at $24.95, will hydrate it too; the difference you are paying for is texture and consistency, not a different mechanism. And if you use nothing else, put the money into sunscreen first. We wrote about what a six-step routine actually needs in the steps you can skip.
The limitation on this page: 4.5 / 5 from Amazon Australia buyers and a price are what we can stand behind. How it behaves on your skin over eight weeks is the part nobody's review can tell you.