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Ingredient · INCI reference

Bis-c16-18 Alkyl Glyceryl Undecyl Dimethicone

Bis-C16-18 Alkyl Glyceryl Undecyl Dimethicone is a modified silicone used in cosmetics as an emollient and emulsifying ingredient.

What it is

This is a dimethicone modified with glyceryl and long-chain alkyl groups, combining the slip of a silicone with surfactant-like character. In formulations it conditions the skin and can help stabilize emulsions, contributing to a smooth, even application. It is a supporting ingredient typically found in the oil or silicone phase.

Safety & warnings

Silicone-based conditioning and emulsifying agents of this type are generally well tolerated and non-sensitizing in cosmetic use. It is not a recognized fragrance allergen.

Origin & sourcing

Synthetic. It is a chemically modified silicone (dimethicone) bearing glyceryl and C16-18 alkyl substituents.

Questions everyone asks

What kind of ingredient is this?

It is a modified silicone (dimethicone) that works as an emollient and emulsifier, helping skin feel and product texture.

Is it a UV filter?

No. It is a supporting silicone-based ingredient and does not provide UV protection.

Sources & references

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