Hello Nthabiseng,
Naturally curly hair is naturally dry. Relaxing also has the potential to make the hair brittle if done too often. I would recommend that you relax every 8-10 weeks and not before. The L’Oreal Optimum range does have a serum that you can use sparingly on a daily basis. Dark and Lovely has MOISTURE PLUS oil moisturiser LOTION which does not leave an oily residue and can also be used daily in place of a serum if you prefer. It is enriched with Almond Oil which will nourish and the product is designed to impart moisture and leave your hair with a glossy shine.
Warm regards
Heidi