Skip to content

Ectoin

Ectoin suppliers and sourcing guide

Ectoin is a small cyclic amino acid derivative that salt-tolerant bacteria make to balance water in their cells. Commercial ectoin is made by fermentation with halophilic bacteria such as Halomonas elongata, then extracted, purified and crystallized. It is a white, water-soluble crystalline powder used in the water phase of skin and hair products and sometimes sold alongside the related hydroxyectoin.

Also known as
ectoine · (S)-1,4,5,6-tetrahydro-2-methyl-4-pyrimidinecarboxylic acid · CAS 96702-03-3
Facts checked
November 2026

Forms and grades of ectoin

Suppliers sell different products under the same name. Specify the one you need.

  • Crystalline powder

    High-purity ectoin powder, the usual form for cosmetic use.

  • Pre-dissolved solutions

    Ectoin in water or glycol with a preservative at a stated concentration.

  • Blends with hydroxyectoin

    Mixtures with hydroxyectoin, a related molecule made the same way; the ratio should be on the specification.

What to check on the COA

Compare each result with your own specification when the lot arrives.

Assay (HPLC)
Ectoin content on the dry basis by HPLC.
Identity
IR spectrum or HPLC retention time against a reference standard.
Water content
Karl Fischer or loss on drying.
pH of solution
pH of a set dilution, which checks for residual acids or bases from purification.
Microbiology and endotoxin
Total aerobic count, yeast and mold; some specifications also list bacterial endotoxin because it is a fermentation product.

Storage, lots and expiry

Storage and shelf life

Keep ectoin powder sealed in a dry place at room temperature; it is hygroscopic and can cake if left open. Solutions should be kept closed and within the supplier shelf life. Retest dates come from the supplier.

Lots and expiry dates

Record assay and water content for each lot. Note the producing organism and supplier, since material from different fermentation processes may differ in impurity profile.

Regulatory status

Facts from regulators and standards bodies, each linked to its source.

  • Health Canada's Natural Health Products Ingredients Database lists ectoine (CAS 96702-03-3) as an approved chemical name with buffering agent and skin-conditioning agent (emollient) among its non-medicinal purposes, for topical use.

    Source: webprod.hc-sc.gc.ca (opens in a new tab)

This is general information, not regulatory advice. Status differs by country and by how the ingredient is used, so check the rules for your product and market.

Ectoin suppliers

Manufacturers and distributors whose own websites say they sell it.

  • Lotioncrafter

    Distributor · Eastsound, WA

    Washington State seller of cosmetic raw materials in small and bulk sizes, including actives, butters, waxes, emollients, emulsifiers and preservatives, for independent formulators and small brands.

  • MakingCosmetics

    Distributor · Redmond, WA

    US supplier of cosmetic ingredients repackaged in retail and bulk sizes, covering actives, butters, oils, waxes and emulsifiers for brands, contract manufacturers and independent formulators.

    • Certified organic
    • cGMP

Suppliers are in alphabetical order and none pays to appear. Each claim is checked against the supplier’s own website on the date shown. Ask for the specification sheet and a recent COA before you order, and confirm details with the supplier.

Frequently asked questions

What forms of ectoin can brands buy?

Common forms include crystalline powder, pre-dissolved solutions and blends with hydroxyectoin. Ask each supplier for the specification sheet of the exact grade they quote.

What should the COA for ectoin include?

Expect assay (HPLC), identity, water content, pH of solution and microbiology and endotoxin, each with its method, specification and result for that lot.

How should ectoin be stored?

Keep ectoin powder sealed in a dry place at room temperature; it is hygroscopic and can cake if left open. Solutions should be kept closed and within the supplier shelf life. Retest dates come from the supplier.

What is the regulatory status of ectoin?

Health Canada's Natural Health Products Ingredients Database lists ectoine (CAS 96702-03-3) as an approved chemical name with buffering agent and skin-conditioning agent (emollient) among its non-medicinal purposes, for topical use.

Sell ingredients to brands?

Request a free listing for the ingredients you make or distribute. No paid placement.

Request a listing