NEVER use a comb on dry curly hairs (my curly hair bredren). Always hydrate with water and add moisturizing beard oil. It will soften the hairs then strengthen them so a comb won't damage the hairs and cause breakage or even WORST - pull the entire hair out the root (then that hair follicle has to start all over). For individuals starting to grow and patch-fill areas it wouldn't be smart, especially if your aim is to grow a full looking beard.
Grow your beard like a true beardman you are.