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Ingredient · INCI reference

Methylsilanol Mannuronate

Methylsilanol mannuronate is a silicon-and-sugar compound used as a humectant and skin-conditioning agent in cosmetics.

Ingredient illustration

Editorial ingredient illustration for Methylsilanol Mannuronate

An editorial illustration of this ingredient.

What it is

Methylsilanol mannuronate combines an organosilicon (methylsilanol) component with mannuronic acid, a sugar acid found in alginates from brown seaweed. It is used in skin-care and sunscreen formulas as a water-soluble conditioning agent that helps attract and hold moisture at the skin surface. Such silanol-sugar derivatives are valued for their light, hydrating feel.

Safety & warnings

Organosilanol conditioning agents of this kind are generally considered well tolerated at cosmetic use levels. There are no widely reported allergen or comedogenicity concerns specific to it.

Origin & sourcing

Semi-synthetic: it pairs a synthetic organosilicon group with mannuronic acid, a sugar acid associated with seaweed-derived alginates.

Questions everyone asks

What is methylsilanol mannuronate for?

It acts as a humectant and conditioning agent, helping the skin attract and retain moisture for a softer feel.

Where does methylsilanol mannuronate come from?

It combines a synthetic organosilicon group with mannuronic acid, a sugar acid linked to seaweed-derived alginates.

Sources & references

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