You might not like my answer but anyway,

We use black polythene to wrap pads.

Why?

Isn't it obvious that if it's a black polythene, there must be pads in it. Then what's left to conceal? The brand may be.

I see many people on social media proudly telling everyone how they bought a packet of pads without a black polythene.

Why?

Ohh, wait. To tell everyone there is nothing to be ashamed of.

What will you even get by doing this?

Nothing except stares.

You think it will change people's mentality?

No

This is what those womyn thought while promoting free bleeding. Let it bleed freely. There is nothing to be ashamed of.

Will it...