Why is my nose a lighter color than my face? How can I treat it?

My nose skin is lighter color than my face color. I have noticed very recently, just a month back. Actually during this lockdown time I was just at home almost 3 to 4 months, after that I have noticed this color difference between my nose and face. Face is darker than the nose ( may be nose is actually my natural skin color) Please advise. Thank you.