The ingredient, explained

Ascorbyl Tetraisopalmitate

Selected evidence concerns human topical combination.

EmollientAntioxidantSkin conditioning

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Ingredient guide

What it is and what it does

L-ascorbic acid, tetraisohexadecanoate

About this ingredient: EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗

Emollient: Helps soften and smooth the skin surface.
Antioxidant: Limits oxidation, including deterioration of formulation ingredients. This label alone does not show a clinical antioxidant effect in skin.
Skin conditioning: A broad cosmetic role for maintaining skin condition. It does not identify a particular clinical benefit.

Function definitions: European Commission ingredient function definitions (SCCNFP/0299/00, pages 16 to 20) ↗

Registry functions describe possible formulation roles, not results for a finished product. A dictionary entry is not an approval or a safety assessment.

A closer look

What the research shows

Human research on a combination

Combined regimens increased hydration and dermal echogenicity, with pigmentation and epidermal-renewal changes.

What this does not tell us

Sixty women aged 20 to 30; sunscreen and rice peptides were included. Contribution of ascorbyl tetraisopalmitate alone and duration are not established by the abstract.

Sources for this summary. PubMed 33529350 ↗

Research review checked Oct 1, 2026

Bounded review of 0 local candidate titles, selected relevant local abstracts, and targeted primary-source web searches. Not an exhaustive systematic review.