36 JOURNAL OF COSMETIC SCIENCE
to reduce their carbon footprint, notably via the Science Based Targets (SBTi) initiative
[16], and report progress via the Carbon Disclosure Project (CDP) Climate [17] and
Company Sustainability Reports. The approach to calculating the carbon footprint within
the chemical industry is favouring the recommendations of Together for Sustainability
(TfS) [18] methodology as a sectorial standard over the historic Product Environmental
Footprint (PEF) methodology even if PEF is still the standard EU Commission reference
methodology. An essential element of TfS is the explicit biogenic or plant sourced carbon
footprint discount that can be allocated, a critical lever for reducing carbon footprint. As
discussed by Warr et al [14] Scope 3, the contribution from the manufacture of fragrance
raw materials, dominates the overall fragrance oil footprint and three key strategies to
reduce carbon footprints were discussed:
Reduce level of use of fragrance by compaction lower levels of more intense fragrances
typically have lower “in product” carbon footprints.
Replace virgin fossil by renewable carbon (today plant, tomorrow perhaps recycled
fossil) in the most favourable cases this can reduce footprint by 3 kgCO
2 e/kg for an
ingredient if the biogenic contribution is allowed.
Avoid materials with the highest carbon footprints there is a x100 factor between
materials with the lowest and highest footprints.
A factor not considered in the earlier article but with increased granularity should now be
highlighted is the contribution of Land Use Change (LUC) and Land Management (LM)
for certain natural extracts [19]. LUC and LM are part of Forest, Land and Agriculture
(FLAG) emissions which are often requested to be reported separately. LUC is a penalty
if the land used for cultivating the plant material was deforested in the last 20 years. The
impact depends largely on the land area used for cultivation, the change in land use, and
the eventual yield of the natural extract. For certain natural extracts, this can have a major
impact and drive the overall footprint for the material. As the default value for LUC will
be linked to the country/region, the only way to avoid the LUC penalty is either to have
evidence that the land used was not deforested in the last 20 years, or eventually to consider
another source or source country where LUC has not occurred. In conclusion, an additional
fourth key strategy should be:
Avoid natural materials with a high FLAG contribution.
The above four strategies, in collaboration with customers can significantly reduce the
carbon emissions linked to fragrance oil production and use. Nevertheless, the goal of
attaining the Green Deal goal of carbon neutrality for the EU by 2050 remains challenging.
Several companies in the fragrance value chain have signed The Climate Pledge [20] with
the more ambitious objective of carbon neutrality by 2040 through eliminating, reducing
or offsetting carbon emissions. Of the four strategies, reducing level of use by compaction
is likely to have the biggest impact [14], followed by replacing virgin fossil carbon. Given
that successful fragrances can have multi-year lifetimes, using “maintenance” occasions
such as safety reworks to also reduce carbon footprint is likely to be a key strategy to reduce
the industry’s carbon footprint.
A very rough characterisation of the carbon footprints of fragrance raw materials by broad
categories is indicated in Figure 4 below note that amongst the 100s of raw materials used
there will be many examples that do not fit this schematic. It should also be noted that whilst
the number of suppliers providing carbon footprint data for their ingredients is increasing
there is still a lack of primary data across the broad range of ingredients used by the industry.
37 Sustainable Fragrances
The CSDDD or CS3D, (EU) 2024/1760, entered into force in July 2024 and will be
discussed in more detail under Human Ethical considerations as it is primarily concerned
with Human and Environmental Rights. Nevertheless, it should be noted that companies in
scope of the Directive should adopt and put into effect a transition plan for climate change
mitigation which aims to ensure that their business model and strategy are compatible with
the limiting of global warming to 1.5oC in line with the Paris Agreement and the objective
of achieving climate neutrality as established in Regulation (EU) 2021/1119, including its
intermediate and 2050 climate neutrality targets.
WATER FOOTPRINT
Water consumption for fragrance compounding activity is minimal, largely associated with
washing vessels. Steps are taken to recycle water and treat wastewater before it is released
back into the environment.
The main water footprint associated with the industry is from the cultivation of natural
materials like oranges for orange oil or renewable starting materials like palm, sugar cane,
or pine trees. In an analogous fashion to carbon footprint (kg CO
2 e/kg), the value calculated
is litres water/kg final ingredient.
The Blue Water use metric measures how much water is used from lakes, rivers and
aquifers to irrigate the crops used during the agricultural stage and will be a key metric for
developing standards like SBTi for Nature and EU CSRD. The value can be weighted by
the sensitivity of the local water tables to drought, so called “scarcity adjusted” [21].
To note that reference is sometimes made to Green Water (rainwater that comes from natural
precipitation) and Grey Water (water impacted by the runoff of nutrients &chemicals).
The Grey Water footprint is a measure of pollution. It is expressed as the volume of water
required to assimilate the pollutant load to meet ambient water quality standards. The
pollutant that requires the largest assimilation volume is referred to as the critical pollutant
and is used to calculate the Grey Water footprint if there are both surface and groundwater
discharges, the Grey Water footprint for each discharge is calculated separately.
For the developing standard SBTi Nature, targets for water quality will be calculated so
that nutrient concentrations (nitrogen and phosphorous) in water systems remain below the
Figure 4. Indicative schematic of Carbon footprint by raw material category.
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