No Show WooCommerce Tag

noshow.php

//Hide Products with tag noshow from Shop Page

add_action( 'woocommerce_product_query', 'exclude_noshow_products' );

function exclude_noshow_products( $query ) {
    if ( $query->is_main_query() && is_shop() ) {
        $tax_query = array(
            array(
                'taxonomy' => 'product_tag',
                'field' => 'slug',
                'terms' => 'noshow',
                'operator' => 'NOT IN',
            )
        );
        $query->set( 'tax_query', $tax_query );
    }
}