OK this is what I do, others may have there own methods.
For all oil Based products like TAA, Lust After Me, Dirty, Copulins
I use 2 methods using a light consistancy lotion that smells good
I will put a big blob in the palm of my hand and take the oil like Lust After Me or TAH and add a few drops mix it with my finger and then spread it on. Now this dosnt mean that I am not going to wear other pheromones or more of the same pheromone. I will then apply say 5 or 6 drops of Lam or If I am wearing TAH 3 or 4 drops of that and then cover it with my scent for the day.
OR
With copulins which I like to put in everything I will add a dropper full or two directly to the lotion which of course you can only do if you buy the lotion in tubs and not tubes. However sometimes I will transfer the lotion from a tube to a tub and do it that way. Then I mix it with a pipette and let it set for a day or two.
With the spray products I will spray on the product let it dry down and use a light scented lotion over it. If it blends or covers the scent well enough I will wear a spray or two over it as well so I get both the fast hard hits and later the slow subtle ones
If your using the lotion as a cover scent just keep in mind that waxy or vaseline type lotions will hamper the diffusion alot.
Shea lotion or scented bottled lotion is less thick and will work better.
They have alot really nice mens scented lotions at the vendors the ladies use for there lotion. Inexpensive to.
Remember lotion is ment to be spread around on the skin. One of the points of using it in lotion is the larger amount of area you can cover which also helps to get those mones diffusing.
If you not looking to cover the smell and just want to do as Daedelus76 does and use the lotion to help slow the disapation of the pheromones for a more lasting subtle effect then you can apply your lotion and spray right on it.
Its gonna depend on the product and your feeling on the smell of it.
Tisha