Cyathea Medullaris Leaf Extract

What is Cyathea Medullaris Leaf Extract?

Cyathea Medullaris Leaf Extract comes from the leaves of Cyathea medullaris, a native New Zealand tree fern known as mamaku or black tree fern. This botanical ingredient is produced via water-based extraction, capturing polysaccharides and feruloyl compounds naturally present in the plant. In cosmetics, it serves mainly as a skin conditioning agent in formulations like creams, lotions, and serums. It works by forming a lightweight film on the skin that helps lock in hydration, promotes suppleness, and supports a smooth texture. The extract's humectant-like properties draw moisture to the skin while its antioxidant components from ferulic acid derivatives offer protective effects against environmental stressors. Typically used at low levels, it integrates well into various product textures without heaviness.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.

Benefits

Enhances skin softness and flexibility.

Supports moisture retention for a smoother feel.

Aids in maintaining the skin's natural barrier.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Individuals with dry or dehydrated skin.
Anyone with known allergies to ferns or tree fern extracts.
People preferring plant-based conditioning ingredients.
People experiencing contact dermatitis from similar botanicals.
Those looking for lightweight hydration in routines.
Individuals sensitive to polysaccharide-rich plant extracts.

Safety Notes

  • Rated low hazard by safety assessments for cosmetic use.
  • Non-comedogenic, unlikely to clog pores.

Frequently Asked Questions about Cyathea Medullaris Leaf Extract

What is Cyathea Medullaris Leaf Extract?

It's a water-extracted ingredient from the leaves of a New Zealand tree fern, used to condition and hydrate skin.

Is it suitable for sensitive skin?

Yes, its low hazard profile makes it generally gentle for most skin types.

How does it function in products?

It forms a hydrating film to improve skin smoothness and moisture balance.