Are powders the only form of makeup allowed on shabbat for Ashkenazi women, and are there some powders not allowed? How can I find out which companies powders are allowed?

Shalom, There are a number of companies that produce makeup that can be used on Shabbat. Here are some of them https://www.shaindeecosmetics.com/#/ https://www.7thdayshine.com/about https://shabbosbrushups.com/ Kol Tuv