The ingredient, explained

Dipropylene Glycol

Dipropylene Glycol has published research relevant to the stated experimental context.

MaskingPerfumingViscosity controllingSolvent

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Ingredient guide

What it is and what it does

1‚1'-Oxydipropan-2-ol; Oxydipropan-2-ol; Hydroxypropyloxypropanol

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

Masking: Reduces or conceals the formula's underlying odour or taste.
Perfuming: A formulation role for perfume and aromatic raw materials that give a product its scent.
Viscosity controlling: Adjusts how thick or fluid a product is.
Solvent: Dissolves other ingredients in a formula.

Function definitions: European Commission ingredient function definitions (SCCNFP/0299/00, pages 16 to 20) ↗ · Danish Environmental Protection Agency: Cosmetic fragrance functions ↗

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

Laboratory and human research

Human skin measurements and in vitro diffusion studies correlated dipropylene-glycol uptake with delivery of the model drug ibuprofen.

What this does not tell us

An excipient delivery experiment, not a clinical skin-benefit trial. Findings concern the tested solvent-drug system; they do not prove moisturizing efficacy.

Sources for this summary. PubMed 33924434 ↗

Research review checked Oct 1, 2026

Selective exact-identity review of 0 supplied local candidates and the targeted primary-source search recorded below. Bounded review, not a systematic search.

Ingredient research is not proof that a product containing this ingredient works.