What actually changes in twelve weeks of a new routine
Most disappointment with skincare is a timing problem rather than a product problem. Here is roughly what happens and when, so you can tell the difference between something not working and something not having happened yet.
Days one to three: it feels different before it looks different
Skin feels less tight in the evening. There is usually nothing to see yet and that is normal. If a product promises a visible change in this window, it is describing the feel and letting you hear the look.
Week one: the surface starts holding water
This is the fastest real change there is. Skin looks slightly fuller in the morning and catches light more evenly. It is subtle and it is genuinely there, and it is the part that fades within days if you stop.
Weeks two and three: fine lines look softer
Not gone, softer. A shallow line sitting in a fuller surface throws less shadow. Set wrinkles look the same as they did, because a surface product does not reach what makes them.
Week four: you stop noticing
The odd part of a routine working is that the new normal becomes invisible. This is the point people conclude nothing is happening. A photograph from before the start is more reliable than your memory here, which is a good reason to take one on day one.
Weeks five to eight: whether it suits you becomes clear
If a product is going to irritate, you will know well before now. If your skin has settled and stayed settled, that is the real signal, and it is more useful than anything visible in the first fortnight.
Weeks nine to twelve: the habit is the result
By now the routine either survived a cold week, a late night and a holiday, or it did not. The routine that survived is the one that will still be doing something next year. This matters more than which serum you picked.
What has not changed, at any point
Set wrinkles, the structure of your skin, and anything a doctor would call a condition. Twelve weeks of a good hydrating routine is twelve weeks of skin looking its better version. That is the honest ceiling and it is worth having.