Find out what your hair 'needs'. Is it dry and kinda straw like? Are the tips frayed? Does it poof up? Does it frizz, ie are there many stray hairs flying around?
In general though, hydrating shampoo helps with growing out unless you have suuuuper oily hair, in which case you should use a clarifying shampoo, but only rub it onto your scalp.
I've seen and heard both men and women bring up their own stretch marks, but I've almost* never seen or heard anyone of any gender bring up someone else's. And I have stretch marks, and have been seen naked by several people of various genders.
*the one exception I've seen is as part of a list of reasons husbands have given for why they find their wives unattractive post pregnancy. And that was maybe twice and in anonymous comments.