How henna powder is made in Sojat
"Sojat Mehndi" is a registered Geographical Indication: application 628, filed by the Mehndi Vyapar Sangh Samiti of Sojat City, Pali district, with a certificate dated 14 September 2021, valid to 12 November 2028. Sojat is about 100 km from Jodhpur, where Clear To Load is based.
Henna leaves are harvested from field shrubs, dried, then ground and sieved in powder mills. The same leaf goes into very different products. Finely sieved powder is sold for body art; coarser grades go into hair colour. Exporters also sell blends with indigo, cassia or herbs, ready-to-use cones of henna paste, and private-label retail packs. Each step adds a risk: leaf from a different source, stems and sand milled in, moisture picked up in storage, and, at the worst end, a synthetic dye added to darken the stain.
What we check on henna powder
| Check | How it is checked | What fails |
|---|---|---|
| Net weight | Packs weighed on a calibrated scale, net of packaging, against the declared weight | Packs short of the declared weight beyond tolerance |
| Seals and barrier | Heat seals pulled and squeezed; liner and zip checked | Open or weak seals, pinholes, missing inner liner |
| Colour and odour | Compared with the approved retained sample in daylight | Brown, dull or grey powder; musty or chemical smell |
| Fineness and grit | Rubbed between fingers; hand-sieved through your mesh if you supply one | Gritty feel, stem fibres, residue on the sieve above your limit |
| Foreign matter and lumps | Powder spread on a white tray | Insects, hair, stones, caked lumps from damp |
| Labels | Read against approved artwork for each market | Skin or body-art claims on packs for the US market; missing hair-dye warnings, batch code or origin |
| Cones | Seal at the tip and back; leaks when pressed; paste colour | Leaking or dried cones, no ingredient list |
| Batch coding | Code and date on pack, inner box and carton against the certificate of analysis | Missing or mismatched codes |
Common henna and mehndi powder defects and how they are classed
| Defect | Typical cause | Class |
|---|---|---|
| PPD or another synthetic dye found by the lab | "Black henna" or "natural black" blends darkened with hair dye | Critical |
| Skin-use claim on henna for the US market | Generic artwork used for every market | Critical |
| Lab result over the agreed lead, arsenic or ash limit | Sand and soil milled with the leaf | Major |
| Open or weak pack seals | Sealer temperature, dust in the seal | Major |
| Short weight | Filling by volume, poor scale control | Major |
| Caked or musty powder | Moisture during storage | Major |
| Colour slightly off the sample | Leaf batch and age | Minor |
| Smudged print on the pack | Ink not dry before stacking | Minor |
Your defect list decides the final class.
Adulteration and the lab tests that matter
The worst risk in henna is not visible. Para-phenylenediamine (PPD), a hair-dye chemical, is added to make "black henna" stain dark and fast, and on skin it can cause severe allergic reactions. Sand, soil and stems are cheaper problems but lower the dye content. The inspector draws samples at random from packed cartons, seals them with numbered tape and sends them to an accredited lab, usually for:
- PPD and other synthetic dyes, on every lot sold for skin and on any "black" or "natural black" product.
- Lawsone content, the dye in henna leaf, as a measure of quality.
- Moisture, total ash and acid-insoluble ash, which show damp storage and sand.
- Lead and arsenic, where the US specification or your own limit applies.
- Microbiology, if your safety assessor asks for it.
For the US, 21 CFR 73.2190 sets the henna specification: no more than 10% moisture, 15% total ash, 5% acid-insoluble ash, 20 ppm lead and 3 ppm arsenic, and no admixture with other plant species. A blend with indigo or cassia is therefore not plain "henna" under that rule. Tests are arranged through lab testing coordination.
Market rules for henna
- US. Henna is a colour additive approved for colouring hair only, not for eyelashes, eyebrows or near the eye (21 CFR 73.2190). Labels must say "Do not use in the area of the eye" and "Do not use on cut or abraded scalp", or equivalent. FDA's fact sheet says henna is not approved for direct skin application, and Import Alert 53-19 covers henna-based skin colour. FDA also states that PPD is not permitted in cosmetics applied to the skin.
- EU. Henna products are cosmetics under Regulation 1223/2009: they need an EU responsible person, a safety assessment, CPNP notification and Article 19 labelling. PPD is listed in Annex III (entry 8a) only as a hair dye substance in oxidative hair dye products, with label warnings that include a reference to temporary "black henna" tattoos.
- All markets. Country of origin and batch marking on every pack; see country of origin labelling.
The inspector checks that the label on each pack matches the market it is going to. A pack printed for body art must not ship on a US order for retail sale.
Packing, transit and your purchase order
Henna powder loses colour with light, heat and moisture, and cakes if it gets damp. Retail packs should be in laminated or foil pouches with good heat seals; bulk powder in lined bags; cones in sealed sleeves. The inspector checks inner liners, pouch seals, carton condition and that cartons are stacked off the floor and dry in the warehouse.
Put these in your purchase order:
- Product: pure henna leaf powder, blend (with each ingredient named) or cones.
- Grade: sieve mesh or fineness, colour reference and retained sample.
- Lab limits: lawsone minimum, moisture, ash and acid-insoluble ash, lead and arsenic, and "PPD not detected".
- Labels per market: intended use (hair or skin), warnings, ingredient list, batch code and date, country of origin.
- Net weight and tolerance; pouch material and seal standard.
- The lab, the tests and the number of sealed samples per lot.
Sojat is outside Jodhpur, so travel is charged at actual cost, quoted before you book; see pricing. Book an inspection near Jodhpur.
Sources
- IP India GI Registry: Sojat Mehndi, application 628
- Rajya Sabha answer on Sojat Mehndi GI (26 Jul 2024)
- 21 CFR 73.2190, henna
- FDA: Temporary Tattoos, Henna/Mehndi, and "Black Henna": Fact Sheet
- Regulation (EC) No 1223/2009 on cosmetic products (EUR-Lex)
- European Commission CosIng: p-Phenylenediamine and its salts, Annex III entry 8a