Over body lotion is fine if you just freshly lotioned it can sometimes slow diffusion but not as much as applying under body lotion.
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Body lotion slows diffusion a bit and makes the effect a bit more subtle much like using oils in my experience. Its good for those really hot months when your mones diffuse to fast.
Sometimes what I do is put a big glob of lotion in my hand. Spray a few sprays of whatever mones into it. mix it up with my finger then smear it all over. Then I apply the rest of the mones normally. This seems to give me longer diffusion times and I get the instant effect as well. I usually just this in the summer months or with copulins.
Thanks for suggesting it
Tisha