The three-product shelf
On the small radical act of paring back the skincare shelf to three things — and why this has, contrary to what the industry would tell you, given me better skin.

About four years ago the shelf above my bathroom sink held eleven products. There was a morning cleanser and a separate evening cleanser. Three serums layered in a specific order. A day cream and a night cream. An eye cream. A weekly exfoliant. A monthly mask. A facial oil. The routine, when fully performed, took about fifteen minutes morning and evening, and the shelf was constantly being rotated as new products replaced ones that had not, by some measure, worked.
Then, after reading a small interview with an older dermatologist who suggested that most people would have better skin on a much shorter routine, I decided to test the hypothesis. I put everything except three products into a box in the bathroom closet. The three remaining were: a gentle cream cleanser, a single moisturiser, and a small bottle of facial oil. That was the entire shelf.

What happened over the next six months
My skin got better. Not by a dramatic amount, but noticeably. The small persistent irritation that had come and gone for years quietened down. The texture, which had always been a little uneven, settled. By month four I was getting compliments on my skin from people who had not made comments before. I had been using fewer products for less time, and the skin was responding by behaving better.
I do not have a clean theory about why. The most likely explanation is that the longer routine had been mildly aggravating my skin in ways I had not noticed, because each individual product was fine but the cumulative load of seven actives a day was too much. The three-product routine gave the skin space to do what skin is supposed to do, which is mostly take care of itself.
What is on the shelf now, four years later
Still the cleanser, the moisturiser, and the oil. I have changed brands a few times — the moisturiser is now a different one than the one I started with — but the count has not changed. Three products. The same three things, morning and evening (the oil only in the evening). The routine takes about three minutes. The shelf is, by anyone's standard, embarrassingly minimal.
What I learned about my own skin
It does not want to be optimised. It wants to be left alone, mostly, and given the small consistent inputs of gentle cleansing, basic hydration, and an occasional drop of oil. Everything else I had been adding was at best neutral and at worst a small chronic insult. The three-product shelf has become, for me, a small ongoing argument against the industry that sold me eleven products in the first place. I am, accidentally, a quieter version of myself in this respect. And the skin, freed from the daily intervention, has finally relaxed.