Oils & Serums

Serum first if you're using both, since it's usually lighter and often has actives meant to reach the hair shaft. Oil goes last to seal and add shine.

Only if the product is labelled as heat-protective — plain finishing oils aren't, and can scorch under direct heat. Check the label before you point a dryer at oiled hair.

If it looks wet an hour after application, it's too much. A few drops for shoulder-length hair is usually enough; fine hair needs even less.

Scalp oils that improve circulation and scalp condition can support a healthier growing environment, but no oil grows hair faster on its own — that part is genetics, hormones, and scalp health combined. See Damage Repair for the rest of that routine.