What is the ruling on a hairdresser doing hair extensions, "puffs" (volumizing styles), and makeup for women, and keeping pictures of female celebrities to apply their styles to customers?

It is permissible to make hair fillers, such as bouffants and the like, if they are not made from human hair. Some scholars permit them even if they are made from non-human hair. It is not permissible to use human hair in fillers because it falls under prohibited hair extensions. It is permissible to keep makeup photos in a place where men cannot see them if there is a need for it, and there is no objection to creating similar makeup as long as it does not involve a religiously forbidden act. However, it is preferable to utilize other means and generally avoid keeping photos, especially those of actresses.