Is there any natural way to make your hair curlier?

i have natural waves in my hair from my mom, her hairs is reallllly wavy and stays that way. for me, i have to put mousse in it and scrunch it and blowdry it upside down. it gets my hair really curly but it implies for work than what my mom has to do lol jealous? yes. wheni use the mousse i dont do that wet looking crunchy, grundgy look so dont worry about that. it looks dry and it works well but is there any natural easy way to make the curls in my hair stronger and more natural than having to use mouse? like how lemon juice gives you highlights..im taking natural..not a perm lol thanks! :)