The biggest mistake people make with body lotion is when they put it on. They get out of the shower, dry off thoroughly, leave the bathroom, walk to the bedroom, dress, do something else for twenty minutes, then remember the lotion and apply it. By that point the window has closed.
Lotion applied to skin that is still slightly damp from the shower does roughly three times as much work as lotion applied to skin that is fully dry. The thin film of water on the skin, sealed in by the lotion, is what gives the skin lasting hydration. Without that film, the lotion is mostly sitting on the surface waiting to be absorbed against a small evaporative gradient. It will absorb eventually, but most of its useful work is done in the first sixty seconds after the shower.
The thirty-second routine
Step out of the shower. Towel-pat — not towel-rub — the body for about fifteen seconds. The goal is to remove drips, not to dry the skin. The skin should still feel cool and slightly damp.

Take a small amount of lotion or body oil. Start with the legs. Work up. Do not waste time on coverage that is not needed — the chest and back of most people do not need lotion every day; the legs, arms, and elbows almost always do. The whole application should take thirty seconds.
Wait two minutes before dressing. This is the part most people skip. The lotion needs about two minutes to absorb fully into the still-damp skin. Dressing immediately drags most of it onto the inside of the clothing, where it does no one any good.
What kind of lotion
Less complicated than the shelf at any chemist would suggest. A good unscented body lotion or — better — a body oil. The brand matters less than the consistency of use. A simple oil used daily beats an expensive lotion used twice a week, every time.
If you have very dry skin, a butter (shea, mango) works for the winter. If you have normal skin, an oil is enough. If you have oilier skin, a light lotion is fine, but apply it to genuinely damp skin or skip it entirely on the chest and back.
A small experiment
Try this for a week. Same lotion you usually use, applied while the skin is still damp from the shower, then a two-minute wait before dressing. Watch what your skin does. The change is, for most people, noticeable within four or five days. The skin starts to feel less papery. The elbows stop needing constant attention. The afternoon dryness that you had not really registered stops happening.
The damp skin window is sixty seconds long. Whatever you do in it counts double.
It is the smallest change in body care I know. It is also one of the most consistently effective.

