Keep the sides shorter
It sounds simple enough, but it’s surprising how many men don’t follow this tip. Talk to your barber about a haircut that keeps the sides shorter than the top. It gives the illusion of a fuller head of hair.
Blunt cut, square neckline
This is another ask your barber tip, but this cutting technique will help your hair look fuller.
You can try a hair thickening or fibre based product, or even a thickening tonic. Apply as directed on the bottle. Then if you want, run your fingers through it while blow drying.
Try a finishing product
Try applying a matte texture finishing spray. This will keep your hair strands separated while keeping your hair in place.