What are some things that every man should try even though they are stigmatized as “gay” or “unmanly”?

Skincare.

I don’t understand why is so gendered. Why ads focus on ‘you can put this black/navy skincare product and still be manly ‘

It’s skin, is an important human organ, and actually not that different in needs from man/woman.

Everyone NEEDS to wash your face properly and to protect it from dehydration and sun damage.