The process of letting the newly compounded blend of fragrance materials age before it is put into a base or a carrier (for example alcohol in the case of a fragrance). This is an essential part of any quality manufacturing and is very often skipped in our modern days where time is seen as a constraint. A minimum of 2 to 3 weeks is needed for all the ingredients of the formula to harmoniously blend together in a chemical process similar to the ageing of wines.

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