welcome to healthcare magic.
i will be glad to be of assistance.
cosmelite cannot be used lifelong. in fact it should be used for a maximum of 3-4 months not more than that.
i will recommend that you use glycolic acid
6% cream on full face every night.
that will also cause evening out of your skin tone and a bright complexion.
the sunscreen has to be reapplied once every 4 hours.
that will ensure good efficacy of the sunscreen.
hope my recommendations are useful to you.
please let me know if you have any queries.