hello c",) Cetaphil has a lip balm which has SPF 50 which works as a sunblock for lips as well. Try this and you will surely love it. I am using it in the morning before I go out of the house and at the same time in the evening before sleeping as it is a good moisturizer too.

I don't have a pic of that now but you can check this one from Souq ->
https://uae.souq.com/ae-en/cetaphil-lip-balm-spf-50-8-ml-25836705/i/

or from any other pharmacies here =)