Kyle Richards, 55, uses this thickening spray for fuller hair — it’s down to $12

The Real Housewives of, well, anywhere are known for their over-the-top and lavish lifestyles. We can only imagine what it’s like for them to live in the biggest mansions, drive the fanciest cars and wear the most expensive clothes. So when Real Housewives of Beverly Hills star Kyle Richards sang the praises of Nexxus Unbreakable Care…