Skin Conditioning

Polypodium Leucotomos Root Extract

INCI: POLYPODIUM LEUCOTOMOS ROOT EXTRACT

Reviewed by Rosie · Last updated 14 Aug 2026

Plant extract traditionally used to support skin and hair conditioning

Best For Skin Types

All, Dry, Sensitive

Addresses

Dryness, Hydration

Usage Frequency

Daily

What Is Polypodium Leucotomos Root Extract?

Polypodium leucotomos root extract is derived from a tropical fern native to Central and South America. It has been used in traditional medicine and more recently incorporated into skincare formulations for its potential conditioning properties.

In cosmetic products, this ingredient functions primarily as a skin and hair conditioner, helping to improve texture and maintain moisture. The extract contains compounds that may support the skin's natural protective mechanisms, though the specific active constituents and their concentrations in skincare products can vary.

How It Works

Polypodium leucotomos extract is believed to work by forming a protective layer on the skin and hair surface, which helps reduce transepidermal water loss and supports the skin barrier. This conditioning action may improve the overall appearance and tactile quality of the skin.

The extract also contains compounds with antioxidant potential, though the extent to which these are bioavailable in topical formulations remains unclear. Most of the conditioning benefit appears to come from the humectant and occlusive properties of the extract itself.

Clinical Evidence & References

Evidence for Polypodium leucotomos root extract in skincare is limited. While the plant has been studied in traditional medicine contexts and some research exists on oral forms for skin health, clinical data on topical application in cosmetic products is sparse.

The ingredient is generally recognised as safe for topical use, but more rigorous clinical trials would be needed to establish specific efficacy claims beyond basic conditioning properties. Current use is primarily based on traditional knowledge and ingredient functionality rather than robust clinical validation.

How to Use

This ingredient is typically used as part of a broader formulation rather than as a standalone treatment. It works well in moisturisers, conditioners, and hydrating serums where its conditioning properties can support overall skin hydration. Apply to clean skin as directed by the product instructions, usually once or twice daily depending on your skin's needs and the product type.

Safety & Precautions

Generally well-tolerated in topical formulations. Those with known fern allergies should exercise caution. No significant safety concerns have been reported with cosmetic use at typical concentrations.

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