I am no expert. . But I have made many batches of lotion. . I don't scent until I am ready to put it in containers..or when lotion is completely cool. I have found some fo's takes more than others.. So it is really up to you on how heavy scented you want your lotion.. I always start off light...you can always add more. . But do remember. ..when you let it set overnight. .i have found most time the scent will mature and get stronger.. But experimenting, to me is the fun of it. . Edited to say. .i always stay within the suggested Guidelines