just a little information for those mom who are worried about 妊娠紋.
if you give birth to bb and no more breast feeding already, highly recommend 'alqvimia body sculptor body oil', massage on stomach, not only helps 妊娠紋, but also firms the skin.
if you are still pregnant or breast feeding, they have a special oil called 'stretch stopper' which made up of several natural oils only (eg. jojoba oil, almond oil...), 100 % natural and safe to use.
i read from western website and books, saying keep the skin hydrated is very important, because the collagen and elastic will break less easily if there is deep skin dehydration.