No shampoo regrows hair, but the right one makes every strand look fuller and keeps the scalp healthy. Here is the honest thinning-hair routine, from plant keratin shampoo to rosemary oil, and when to see a doctor instead.

Haircare hides more animal ingredients than skincare: keratin, silk, honey and milk proteins. Here is how to read the label, what vegan keratin really is, and how to match a vegan shampoo and conditioner to your hair type.