How to use tinyMCE for user “biographical info” without messing with any core file?

I noticed when you typein the user’s “biographical info” on the profile, it shows up in one page! Looks really terrible. So:

Is there a way to use tinyMCE or other solution for user “biographical info” without messing with any core file, and without any plugin?

Thanks a lot.

Not sure if this is the perfect way to do it, but it worked for me by removing the description element using jQuery and then adding editor for the description element.

/*******************************************
* TinyMCE EDITOR "Biographical Info" USER PROFILE
*******************************************/
function biographical_info_tinymce() {
    if ( basename($_SERVER['PHP_SELF']) == 'profile.php' || basename($_SERVER['PHP_SELF']) == 'user-edit.php' && function_exists('wp_tiny_mce') ) {
        echo "<script>jQuery(document).ready(function($){ $('#description').remove();});</script>";
        $settings = array(
            'tinymce' => array(
                'toolbar1' => 'bold,italic,bullist,numlist,link,unlink',
                'toolbar2' => '',
                'toolbar3' => '',
                'toolbar4' => '',
            ),
            'wpautop' => true,
            'media_buttons' => false,
            'quicktags' => false,
        );
        $description = get_user_meta( $user->ID, 'description', true);
        wp_editor( $description, 'description', $settings );
    }
}
add_action('admin_head', 'biographical_info_tinymce');
remove_filter('pre_user_description', 'wp_filter_kses');
add_filter( 'pre_user_description', 'wp_filter_post_kses' );