Why the score varies
This ingredient is made commercially by more than one route, and ISO 16128 scores the feedstock actually used. Without a supplier certificate of origin the value cannot be claimed.
| Route | Feedstock | NOI | Share | Notes |
|---|---|---|---|---|
| citrus extraction | Citrus aurantium (bitter orange) fruit | 1.00 | minority, unconfirmed | |
| chemical synthesis | petrochemical phenolic ketone via reductive amination | 0.00 | majority, unconfirmed |
How we scored it
Where it comes from
Can be extracted from unripe Citrus aurantium (bitter orange) fruit, or synthesised from petrochemical phenolic-ketone precursors by reductive amination. The dominant route for cosmetic-grade material could not be confirmed.
In plain English
A compound related to ones found in bitter orange, used here to help protect skin. It may be extracted from the fruit or made synthetically; we could not confirm which source applies.
CosIng definition: Synephrine is the organic compound
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Structure
4-[1-hydroxy-2-(methylamino)ethyl]phenol
References
- 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
- 2Synephrine. PubChem CID 7172. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3SYNEPHRINE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4SYNEPHRINE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=SYNEPHRINE