add_filter( 'woocommerce_product_tabs', 'woo_new_product_tab' );
/**
 * Add 2 custom product data tabs
 */
function woo_new_product_tab( $tabs ) {
	
	// Adds the new tab
	if(get_field('ska_ingredients'))
	$tabs['ingredient_tab'] = array(
		'title' 	=> __( 'Ingredients', 'woocommerce' ),
		'priority' 	=> 15,
		'callback' 	=> 'ska_ingredients_callback'
        );
        if(get_field('ska_works'))
        $tabs['work_tab'] = array(
		'title' 	=> __( 'How To Use', 'woocommerce' ),
		'priority' 	=> 15,
		'callback' 	=> 'ska_works_callback'
	);

	return $tabs;

}