Hair Oiling: What It Does, and What It Cannot Fix

An hour before a wash, on the scalp not the lengths, and why it will not stop hair fall on its own.
Oiling helps, but not with everything it is credited for.
What it does
It reduces protein loss during washing and keeps the scalp from drying out. Coconut oil is one of the few that genuinely penetrates the hair shaft.
How
Warm slightly, work into the scalp with fingertips rather than nails, leave for an hour. Overnight adds little and attracts dust.
What it will not do
Hair fall driven by iron deficiency, thyroid issues or post-partum change does not respond to oil. If you are losing more than a hundred strands a day for weeks, see a doctor rather than buying another bottle.