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Chitosan

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Chitosan

⚠️ Protective equipment required for this preparation

This recipe involves handling products that may be irritating or toxic. Always wear the following equipment:

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Plant vitality Other Animal-based

Other

A preparation method specific to this particular record, different from the four usual methods (infusion, decoction, maceration, fermentation).

Process summary

See the record itself for the detailed step-by-step process — there is no single generic process for this category.

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 ⚠️ Tolerated

A biostimulant in powder or solution form, derived from the chitin in crustacean shells.

Application

When to use: Routinely

Application description: Spray onto leaves or apply to the soil, diluted in water, as a biostimulant.

Dose: The exact concentration is not specified in the sources consulted for this homemade recipe; start with a conservative dilution and adjust as needed.

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Regulatory status

⚠️ Tolerated (under conditions)

Chitosan is a basic substance approved in the EU (Implementing Regulations 563/2014 and 2022/456), but with purity specifications: food-grade quality and, in the case of chitosan, at least 85% purity and fungal origin. Chitosan obtained at home from crustacean shells does not meet these specifications; as a biostimulant for personal use, it does not require European authorization, but the shells are animal by-products (Regulation 1069/2009), and hydrochloric acid and caustic soda are hazardous substances.

Official texts

Official sources automatically checked on 20/10/2026.

What the icons mean: ✅ Authorised ⚠️ Tolerated 🟠 Not prohibited ⛔ Not authorised EU 🔎 Status being verified Full details →

Documentary information, checked on 12/10/2026. Not a substitute for legal advice; regulations may vary from country to country. See the regulations · Substances authorised in Europe

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