How to reface the front of a bathroom cabinet and doors?
Here is a painting tutorial https://www.hometalk.com/523090/repainting-bathroom-cabinets-quick-and-easy
Or this may be useful too https://www.hometalk.com/33304434/how-to-re-stain-bathroom-cabinets-with-water-based-wood-stain
Chalk paint is the quickest since it needs almost no prep time. Resanding is an option to change color of a stain. Prime and paint another color with latex. A completely different look is wall paper in the middle cut to the door shape, leaving a border around the edge of a solid color. It the doors are flat with no indentation, add a border like a picture frame around with thin trim work to match a color in the paper.
And this may be an idea too https://www.hometalk.com/27528633/reface-kitchen-cabinet-door
Paint is the most common choice.
Depending on what the surface is now, you’ll need to prime it, after you clean it with TSP solution & remove the hardware.
I would use a semi-gloss latex enamel paint, made for cabinets, because it’s scrubbable.
Two full coats with full-dry between coats.
Painting is the easiest. Covering the door with trim or wood panel would change the look. Staining with gel stain is an option. You can only go darker. Covering with Contact paper if the doors are flat with no pattern.
Hi: I've used this paint on my bathroom cabinets with great success:
It depends on the look you are trying to achieve. You can go simple with plywood and then trim for a shaker or farmhouse look.
What do you want to do - change the color and paint? Add more dimension? Sand it down and stain?
To reface cabinets means to purchase new cabinet doors.
I believe you are asking for ideas on how to 'renew' or 'redo' your cabinets.