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Plugin API/Action Reference/customize controls print styles


The customize_controls_print_styles action hook is triggered within the <head></head> section of the theme customizer screen.

This hook functions similarly to the wp_head action hook, but only affects the theme customizer screen. Generally, when using the Theme Customization API, you are better off hooking into wp_head instead.

add_action('customize_controls_print_styles', 'your_function');

See Theme Customization API and Plugin API - Actions for more detail.