Quelques termes liées à la parfumerie :

Round out ((To ... a composition)
Full of imagery expression which tries to define the final work of the creator to give to his composition a bigger harmony and the best balance of its components.

Dilute
Decrease the concentration of a nice-smelling product.

Filter (To)
Physical action which consists in holding (retaining) the insoluble particles in suspension in a liquid by means of a filter: paper, asbestos, tissue, etc. …

Tenacity
Quality of perfume, which have particularly persistent effect.

Solution
Homogeneous liquid containing a dissolved body; preparation diluted with certain nice-smelling products or of concentrated by perfume (alcoholic solution).