There are mouthwash products available made from natural ingredients which can help return moisture to the mouth even while they kill bad germen. You can put some lip pomade on your lips to prevent them from cracking. https://Nghiepvuketoan.vn/index.php?language=vi&nv=news&nvvithemever=d&nv_redirect=aHR0cHM6Ly9Xd3cub3B0aWNhbGpvdXJuYWwuY29tL3NsZWVwLWFwbmVhLWFuZC1kcnktZXllLXN5bmRyb21lLw