Glucomannan
A plant polysaccharide from konjac root. It draws water and gives a soft gel texture. Well tolerated.
Evidence by route
Topical application
A plant humectant and thickener. Safe.
- CIR Cosmetic Ingredient Review safety assessment
How to read tiers A–F
- BLimited evidence. One RCT or several controlled studies with limitations
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Combination, Oily, Sensitive
About this ingredient
Glucomannan is a plant polysaccharide obtained from konjac root. INCI: Glucomannan. In a formula it works as a humectant, thickener, and film former: it attracts and holds water, raises viscosity, forms a thin smooth film on skin, and gives a feeling of comfort. It is a functional moisturizing component with a sensory effect rather than a potent active. Pregnancy safety. The large molecule does not penetrate skin, is systemically negligible, and there is no evidence of harm. It can be used during pregnancy and lactation. Tolerance. Irritation and allergen potential are low, suitable for sensitive skin.
Frequently asked questions
Is Glucomannan safe during pregnancy?
Glucomannan is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Glucomannan for?
Glucomannan suits: normal, dry, combination, oily, sensitive.
What is Glucomannan and what does it do in cosmetics?
A plant polysaccharide from konjac root.
What's the INCI name for Glucomannan?
The INCI name is Glucomannan. It may also appear as: Konjac Glucomannan.
See Glucomannan 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.
Similar role in the formula
Explore by category
Ingredients in the same category
Glucosamine HCl, Glucose, Glucuronic Acid, Glutamic Acid, Hydroxypalmitoyl Sphinganine, PEG/PPG-17/6 Copolymer, Taurine, C18-36 Acid Triglyceride
Published: · updated: