There are some really great ideas on the internet on how to do this. Good luck to you.
Paint with a light color, add brighter lights and mirrors. Delicate decor items and keep counters clear.
To start, a fresh coat of paint (white). A picture of your space would help me make more specific recommendations.
Hi there, Use Ice cream colours -and maybe a bit of Lace or a pretty Blind....etc.
Here is how I brightened up my bathroom on a budget https://www.homeroad.net/2018/04/a-neutral-bathroom-makeover.html