actives

Ascophyllum nodosum / Laminaria digitata (Organic)

Organic Kelp (Iodine Source)

conditioninghumectantantioxidantskin protectant

INCI Name

Ascophyllum nodosum ...

Functions

4 Roles

Sustainability

9/10

Category

actives

What It Does

Ascophyllum nodosum and Laminaria digitata are two species of brown macroalgae harvested from the cold, nutrient-rich waters of the North Atlantic, prized in cosmetics for their exceptionally rich content of fucoidan, alginic acid, iodine, minerals, and polyphenolic antioxidants. The organic certification ensures the seaweeds are harvested and processed without synthetic pesticides or solvents, making them particularly attractive for clean and natural formulations. Formulators choose this dual-species blend for its synergistic delivery of skin-conditioning polysaccharides, trace minerals, and iodine, which are associated with supporting skin barrier function, hydration, and a visible firming effect.

Improves slip and manageability
Reduces static and frizz
Adds shine and smoothness
Protects from mechanical damage

Technical Properties

pH Range

5.0-7.5

Optimal working range

Ionic Charge

anionic

Molecular charge type

Viscosity Effect

thickening

Impact on formula thickness

Foaming Ability

none

Lather generation

Ingredient Compatibility

Works Well With

humectantsnonionic surfactantsanionic surfactantsbotanical extractsmost emollientsfilm formerspolysaccharide thickeners

Avoid Combining

high concentrations of cationic ingredientsstrong oxidizing agentsvery low pH systems
Compatibility analysis powered by OpenMix — open-source formulation science

Sustainability Profile

Sustainability Score

9/10

Biodegradability

readily biodegradable

Source

plant-derived

Feedstock

Ascophyllum nodosum (knotted wrack) and Laminaria digitata (oarweed) are wild-harvested or cultivated brown seaweeds sourced from cold North Atlantic coastal waters, certified organic

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