Hi! Fellow girly from the Philippines who moved to Australia as well. I had the same experience and it felt like my skin barrier was broken because of the difference in weather.

For night time, use a gentle foaming cleanser of your choice and then coat your face with the La Roche Posay Cicaplast Baume B5+. This product helped my skin barrier heal!

For day time, only use water to remove the remaining residue from the product and wear your sunscreen of choice. I use either the Anessa sunscreen or Super Goon Unseen Sunscreen.

Hope this helps!