We looked at The Ordinary Natural Moisturizing Factors + Hyaluronic Acid Scalp Serum on construction, materials and how it holds up. Here is what stood up. Texture matters more than the ingredient list for whether you will actually use it. Give anything new four weeks before you judge it. Introduce one active at a time, otherwise you cannot tell what worked. The groups below run from the decision that matters most to the ones you make afterwards.

What decides this is formula, texture and where it sits in your routine. Everything else is preference. Two from the first group show the range: RoC Skincare's RETINOL CORREXION® Line Smoothing Eye Cream at $22, and Eberjey's True Botanicals Phyto-Retinol Sleep Serum at $90. The first is the easy entry point; the second is where the money goes. Texture matters more than the ingredient list for whether you will actually use it. Give anything new four weeks before you judge it. A higher price mostly buys materials and finishing, and occasionally it buys nothing at all.

Thinnest texture first, richest last. Consistency beats the number of steps. From the second group, ILIA's The Sunscreen + Color Routine ($129) is the one that earns its place, because it works in more than one context without being restyled. The third group is smaller and deliberately narrower, hair products, for the decisions you make after the main one. None of this needs the whole group. One piece from each is usually enough.

There are 20 skincare here from 17 brands, $6 to $165, all in stock when this was written. We would not buy all of them, and neither should you. elfcosmetics.com's Mini Holy Hydration! Face Cream at $6 is the low-risk way in, and jennikayne.com's The Serums at $165 only makes sense if this is a category you already use constantly. On the ordinary natural moisturizing factors + hyaluronic acid scalp serum specifically: the difference between the top and the bottom of this list is real but smaller than the price gap suggests. Nothing here is included because it is famous, and price is not used as a proxy for quality anywhere on this page. If you take one thing away: if you would not buy it at full price, you do not want it on sale.