Sir, using melaglow cream in day time or after my bath is okey or not?

Apparently megaglow isn't a skin lightening cream. So I can't give you any advice on that
Maybe you should contact the website that sells this product.
Bear in mind that if you use it after bathing your skin is more likely to absorb it. So maybe should wait a bit and apply it then.

Suvendu123 are you trying to lighten with this crème? I have never heard of it, but you can type the list of ingredients here and I'll take a look at them.