Evigrade
DrugsCosmetic ingredientsCalculatorsInteractionsEvigrade SkinEvigrade Meds ↗
ConditionsJournalMethodologyPro for practitioners
ESRU

Ectoin

A small water-binding molecule (osmolyte) from halophilic bacteria. In small randomized trials, creams with 5.5–7% ectoin reduced redness, dryness and itch on inflamed or damaged skin. Protection of proteins and DNA from UV has been shown only in cell cultures

Evidence by route

A

Topical application

Several small randomized trials found less redness, itch and water loss with ectoin in atopic dermatitis, after laser and in radiation dermatitis. The best data are for 5.5–7%. The trials were short, with 30–104 people. Anti-aging and UV-protection claims rest only on cell studies

  • Heinrich U et al. In vivo assessment of Ectoin: a randomized, vehicle-controlled clinical trial. Skin Pharmacol Physiol. 2007;20(4):211-8. PMID 17519560
  • Alexopoulos A et al. A randomized, observer-blind, vehicle-control, multi-center clinical investigation for assessing the efficacy and tolerability of a 1% ectoine and hyaluronic acid 0.1%-containing medical device in pediatric patients with mild-to-moderate atopic dermatitis. Pediatr Dermatol. 2023;40(1):78-83. PMID 36038984
  • Załęska I et al. Topical 7% Ectoine Modulates Cutaneous Response During Serial Vascular 1064-nm Nd:YAG Laser Therapy: A Randomized, Vehicle-Controlled Split-Face Study. Biomedicines. 2026;14(9). PMID 42792808
  • Abd Elazim NE et al. Topical Ectoin Versus Topical Dexpanthenol for Managing Acute Radiodermatitis Associated With Breast Cancer Radiotherapy: A Randomized Double-Blind Study. Dermatitis. 2023;34(6):516-524. PMID 37792331
  • Marini A et al. Ectoine-containing cream in the treatment of mild to moderate atopic dermatitis: a randomised, comparator-controlled, intra-individual double-blind, multi-center trial. Skin Pharmacol Physiol. 2014;27(2):57-65. PMID 23949258
  • Kauth M et al. Topical Ectoine Application in Children and Adults to Treat Inflammatory Diseases Associated with an Impaired Skin Barrier: A Systematic Review. Dermatol Ther (Heidelb). 2022;12(2):295-313. PMID 35038127
  • Hon KL et al. Testing an Ectoin Containing Emollient for Atopic Dermatitis. Curr Pediatr Rev. 2019;15(3):191-195. PMID 30987568
  • Buenger J et al. Ectoin: an effective natural substance to prevent UVA-induced premature photoaging. Skin Pharmacol Physiol. 2004;17(5):232-7. PMID 15452409
How to read tiers A–F
  • AProven efficacy. Two or more independent RCTs with instrumental endpoints

Tolerability and safety

Working concentrations
Studies on damaged or inflamed skin used 5.5–7% ectoin (Abd Elazim 2023, Załęska 2026, a review by a manufacturer's employee, Kauth 2022). A 2% cream was tested only on healthy skin, and the abstract gives no figures (Heinrich 2007). The 1% concentration was tested only together with 0.1% hyaluronic acid (Alexopoulos 2023)
Irritation potential
Low
Allergen risk
Low
Pregnancy
Unknown
Suitable for
Normal, Dry, Combination, Sensitive, Oily

About this ingredient

Ectoin is a small water-binding molecule that halophilic bacteria accumulate to survive high salt levels. It is added to creams for dry, sensitive and atopic skin and to care after laser treatment. Nasal sprays and eye drops with ectoin are a different route, and their data do not apply to skin. The best human data concern soothing and barrier effects on damaged or inflamed skin at 5.5–7%. After vascular laser, 30 people received a cream with 7% ectoin on one half of the face and the same base on the other. The ectoin side had less erythema and TEWL and higher hydration. The authors took only instrument readings (Załęska 2026). In radiation dermatitis, 7% ectoin gave a lower grade at week 2 and less pain and itch than 5% dexpanthenol (50 patients, Abd Elazim 2023). In 70 children with atopic dermatitis, 1% ectoin plus 0.1% hyaluronic acid outperformed the base on objective SCORAD (Alexopoulos 2023). In 65 adults it matched a non-steroidal cream (Marini 2014). No trial has compared it with corticosteroids. These trials are small and short. Anti-aging and UV-protection claims rest on cell studies by the raw material maker (Buenger 2004). Protection against glycation has not been studied in human skin. In the pediatric trial, mild skin reactions occurred in 23.5% of children vs 5.7% on the base (Alexopoulos 2023). In an open study some children felt tingling on inflamed skin (Hon 2019). There are no data on use during pregnancy and breastfeeding.

Frequently asked questions

Is Ectoin safe during pregnancy?

Safety data for Ectoin during pregnancy is insufficient. Best avoided when in doubt.

What skin types is Ectoin for?

Ectoin suits: normal, dry, combination, sensitive, oily.

What is Ectoin and what does it do in cosmetics?

A small water-binding molecule (osmolyte) from halophilic bacteria.

What's the INCI name for Ectoin?

The INCI name is Ectoin. It may also appear as: Ectoine, (S)-2-methyl-1,4,5,6-tetrahydropyrimidine-4-carboxylic acid.

What concentration of Ectoin is effective?

Studies on damaged or inflamed skin used 5.5–7% ectoin (Abd Elazim 2023, Załęska 2026, a review by a manufacturer's employee, Kauth 2022). A 2% cream was tested only on healthy skin, and the abstract gives no figures (Heinrich 2007). The 1% concentration was tested only together with 0.1% hyaluronic acid (Alexopoulos 2023)

See Ectoin in a product composition right on the store page

The Evigrade extension adds an evidence panel to iHerb, Sephora, Druni and 12 more stores. This ingredient and every other one in the product show evidence-tier, allergen risk and pregnancy/lactation flags at a glance.

Install the extension for free

Similar in action

Published: · updated: