Galactomyces ferment filtrate in cosmetics: a jurisprudential analysis via istihalah

Mohd Nadhir, Nazratul Huda and Mat Jubri@Shamsuddin, Mustafa (2026) Galactomyces ferment filtrate in cosmetics: a jurisprudential analysis via istihalah. Halalsphere, 6 (2). pp. 30-35. E-ISSN 2773-6040

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Abstract

This study examines the permissibility (halal) status of Galactomyces Ferment Filtrate (GFF) in cosmetic products through the Islamic jurisprudential principle of Istihalah (transformative purification). Commercially known as Pitera (TM), GFF is a yeast-derived bioactive ingredient widely used in skincare yet associated in popular discourse with sake (Japanese rice wine), raising purity (I) concerns among Muslim consumers. Using a qualitative library research methodology, the study analyses GFF across three stages: its biological source and characteristics; its industrial production process; and the application of Istihalah to assess the completeness of the transformation. Classical juristic positions from the four Sunni schools and contemporary scholarly opinions are surveyed alongside scientific literature. The findings demonstrate that downstream processing eliminates all ethanol from the final ingredient, satisfying the conditions for Istihalah Sahihah. GFF is therefore classified as tahir (pure) and halal for cosmetic use.

Item Type:	Article (Journal)
Uncontrolled Keywords:	Galactomyces Ferment Filtrate, Istihalah, halal cosmetics, transformative purification, taharah
Subjects:	BPH Islamic Economics > BPH107 Halal cosmetics BPK Islamic law. Shari'ah. Fiqh K Law > KBP Islamic Law > KBP1 Islamic law.Shariah.Fiqh > KBP425 Uṣūl al-fiqh. Jurisprudence and theory of law. Science of legal reasoning. Q Science > QH Natural history > QH301 Biology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Islamic Revealed Knowledge and Human Sciences > Department of Fiqh and Usul al-Fiqh
Depositing User:	Dr. Mustafa Mat Jubri @ Shamsuddin
Date Deposited:	04 Aug 2026 15:57
Last Update:	04 Aug 2026 15:57
Queue Number:	2026-07-Q4496
URI:	http://irep.iium.edu.my/id/eprint/130486

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