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Kohl (Kajal, Surma, Al-Kohl)

Definition

A dark powder applied to the eyes as a cosmetic in South Asian and Middle Eastern cultural traditions. Traditional mineral kohl is galena (lead sulfide, PbS), which may contain 40-80% lead by mass. Non-lead versions use carbon black (lampblack or charcoal). Traditional galena kohl is prohibited in the US (FDA Import Alert IA-66-01), the EU (Annex II Entry 209), and India (Cosmetics Rules 2020 Schedule 1).

Traditional mineral form
Galena (lead sulfide, PbS)
Lead content
Can be 40-80% by mass
Non-lead alternative
Carbon black (lampblack or charcoal)
US status
Prohibited, FDA Import Alert IA-66-01
India status
Restricted, Cosmetics Rules 2020 Schedule 1

Common questions

Why is traditional kohl still found in forensic toxicology cases despite bans?+

It is imported informally or made at home following traditional recipes, so it circulates outside regulated retail channels and shows up in pediatric lead poisoning investigations even where sale is prohibited.

How is kohl distinguished from other sources of lead exposure in an investigation?+

Analysis of the powder itself, for example by XRF or ICP-MS, identifies galena's characteristic lead-sulfur signature, and exposure history plus application site on the eyelid help link a poisoning case to cosmetic use.

Related terms

Ammoniated Mercury
A mercury-ammonia complex (mercuric chloride-ammonia, HgNH2Cl) historically used as a skin-lightening active ingredient. Inhibits melanogenesis by binding to tyrosinase's active-site cysteine. Causes...
EU Regulation 1223/2009
The EU Cosmetics Regulation: the primary legal framework governing cosmetics marketed in the EU. Annex II (prohibited substances) lists lead (Entry 209),...
Formaldehyde-Releasing Preservative (FRP)
A preservative that slowly releases formaldehyde as its antimicrobial active ingredient. The five principal FRPs in cosmetics are quaternium-15, DMDM hydantoin, imidazolidinyl...
Galena (PbS)
Lead(II) sulfide: the principal ore of lead, a grey-black metallic mineral used as the traditional pigment in kohl eye cosmetics for thousands...
MoCRA 2022
Modernization of Cosmetics Regulation Act 2022 (US), signed into law December 2022. Requires cosmetic-facility registration with FDA, product listing, safety substantiation, adverse-event...
Nash Reagent Method
The EU reference colorimetric method for free formaldehyde in cosmetics: formaldehyde reacts with ammonium acetate and acetylacetone to produce the yellow 3,5-diacetyl-1,4-dihydrolutidine...
RAPEX / Safety Gate
The EU rapid alert system for dangerous non-food consumer products, including cosmetics. Analogous to RASFF for food. Member states notify dangerous products;...
Rhodamine B
A xanthene dye (C28H31ClN2O3, MW 479.0) with brilliant pink fluorescence, listed on the EU REACH SVHC candidate list as a suspected carcinogen...
Tyrosinase Inhibition
The mechanism by which mercury compounds and some other skin-lightening agents achieve depigmentation: mercury binds to the sulphydryl (cysteine) group at the...

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