Researched by Helena DeMaria-Williams
Formula IngredientEmollientINCI: Pentaerythrityl Tetraisostearate
Pentaerythrityl tetraisostearate is an ester derived from pentaerythritol and isostearic acid, used primarily as an emollient and emulsifying agent in cosmetics. It forms a lightweight, non-greasy film on the skin that imparts a rich, cushiony texture and enhances gloss without leaving a sticky residue. It is widely used in lip care and colour cosmetics for its water-resistance and long-wearing properties.
Category
Emollient
Irritation Risk
Low
Skin Types
all skin types, dry skin, normal skin, sensitive skin, lip care formulations
emolliency, skin conditioning, film-forming, water resistance, texture enhancement, gloss
Irritancy rating of 0 (INCIDecoder/CosIng). No Annex II (banned) or Annex III (restricted) classification in the EU CosIng database. Generally well tolerated across skin types.
Pentaerythrityl tetraisostearate is not a photosensitising ingredient. No increased sun sensitivity associated with its use.
No pregnancy-specific safety data found in INCIDecoder or EWG sources. As a large-molecular-weight ester with minimal systemic absorption, it is generally considered low concern, but no formal classification is available.
Pentaerythrityl tetraisostearate is an ester derived from pentaerythritol and isostearic acid, used primarily as an emollient and emulsifying agent in cosmetics. It forms a lightweight, non-greasy film on the skin that imparts a rich, cushiony texture and enhances gloss without leaving a sticky residue. It is widely used in lip care and colour cosmetics for its water-resistance and long-wearing properties.
Individuals with MANUAL REVIEW: no widely documented contraindications; those with known isostearic acid sensitivity should patch test should review the considerations above before use.
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