Nostoc Endophytum
INCI: NOSTOC ENDOPHYTUM
Reviewed by Emma · Last updated 2 Jun 2026
A cyanobacterium-derived ingredient that supports skin hydration and conditioning
Best For Skin Types
All, Dry, Sensitive, Mature
Addresses
Usage Frequency
Daily
What Is Nostoc Endophytum?
Nostoc Endophytum is a type of cyanobacterium (formerly classified as blue-green algae) that produces naturally occurring polysaccharides and bioactive compounds. In skincare formulations, it is used primarily for its skin-conditioning properties, helping to maintain moisture and support the skin's natural hydration mechanisms.
The ingredient works by forming a protective layer on the skin's surface and helping to retain water in the outer layers of the epidermis. It is often included in serums, moisturisers, and hydrating masks where its film-forming and humectant-like properties can contribute to a smoother, more supple skin feel.
How It Works
Nostoc Endophytum contains polysaccharides that have both humectant and emollient properties. These compounds are attracted to water molecules and help draw moisture into the outer layers of the skin whilst simultaneously forming a light protective layer on the surface. This dual action helps minimise transepidermal water loss (TEWL) and maintain skin hydration over time.
The ingredient may also contain bioactive compounds that can provide mild conditioning effects, though the primary mechanism is hydration-focused rather than actively stimulating skin renewal or producing visible structural changes.
Clinical Evidence & References
Published clinical data specifically on Nostoc Endophytum in skincare is limited, and most evidence comes from cosmetic chemistry research and manufacturer studies rather than large-scale human trials. In-vitro studies suggest the polysaccharides have good water-binding capacity and film-forming ability, supporting its use as a hydrating agent.
Anecdotal consumer feedback and small user studies indicate improvements in skin hydration and texture when used in appropriate formulations, though robust clinical evidence comparing it directly to other well-established hydrating ingredients is not widely available. It is considered a promising natural alternative to synthetic conditioning agents, but consumers should approach claims with appropriate caution pending further research.
How to Use
Nostoc Endophytum is typically encountered as part of a complete skincare formulation rather than as a standalone ingredient. It works well in layered routines — apply it in a hydrating serum or moisturiser to damp skin to optimise water absorption. It is generally compatible with other active ingredients, though as with any new product, introduce it gradually to observe how your skin responds, particularly if you have sensitive skin.
Safety & Precautions
Frequently Asked Questions
From the Clinic
Not sure what your skin actually needs?
Two minutes, a few questions, and we’ll point you at what matters — no guesswork.
Take the skin quizRelated Ingredients
Nicotinic Acid Adenine Dinucleotide Phosphate
A form of vitamin B3 involved in cellular energy and stress response pathways
Nicotinoyl Tranexamic Acid
A dual-action ingredient combining niacin and tranexamic acid for skin conditioning and protection
Nonfat Dry Milk
A milk-derived protein that conditions skin and hair with a gentle, natural moisturising effect
Nymphaea Alba Root Extract
A botanical extract that conditions and supports skin's natural moisture retention
Nymphaea Caerulea Flower Extract
A botanical extract traditionally used to support skin conditioning and comfort
Nymphaea Caerulea Flower Water
A gentle flower water traditionally used to soothe and condition the skin
Learn More About Skincare Ingredients
Explore our comprehensive ingredient glossary to understand what's in your products.
Browse All IngredientsShop Our Products
Find professional skincare solutions at Skintique.