I sell an actual item worn by women, mostly middle-aged. Need to strengthen our conversion rate. Which social media is best for this age group?

Our product, HOT GIRLS PEARLS, is jewelry designed to keep women cool through hot flashes, for any reason they happen. We are totally redoing our website now, but want to make everything right as well as draw traffic. This is not a software or tech company, so it's difficult to find advice outside of that world.