Description

What Is Isononyl Isononanoate?

Isononyl Isononanoate is a synthetic ester produced by the esterification of isononanoic acid with isononyl alcohol. Its INCI name is ISONONYL ISONONANOATE, CAS : 59219-71-5 . Thanks to its distinctive multi-methyl branched structure, it delivers a silky, dry skin feel and is commonly referred to as ININ. It is widely used in cosmetic formulations as a lightweight emollient, spreading agent and pigment dispersant.

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Key Features

• Silky, dry skin feel: its multi-methyl branched structure glides on lightly, leaving the skin soft and smooth with no greasiness;
• Low viscosity and excellent spreadability: easy to emulsify and disperse, improving the spreadability of formulations;
• Outstanding compatibility: compatible with silicones, mineral oils, vegetable oils and various esters, and it helps prevent low-temperature precipitation of silicones;
• Strong dispersing power: effectively wets and disperses pigments, UV filters and oil-soluble actives;
• Good stability: better oxidative stability than natural oils, helping formulations resist rancidity;
• A proven alternative to cyclomethicone for “silicone-free” claims.

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How It Works in a Formulation

Isononyl Isononanoate is a sensory and delivery ingredient rather than an active. In the oil phase of an emulsion, its branched structure reduces friction between oil-phase components, lowering the overall viscosity and allowing the formulation to spread evenly and effortlessly across the skin. It leaves behind a thin, non-occlusive hydrophobic film that helps reduce transepidermal water loss without the heavy, draggy feel of triglyceride oils. It also offsets the tackiness of emulsifiers and polymeric thickeners, and in pigmented products it wets pigment surfaces to improve color dispersion, stability and payoff.

Formulation Tips

Add Isononyl Isononanoate to the oil phase during manufacturing; it is stable at standard emulsification temperatures and compatible with most nonionic, anionic and cationic systems. It pairs well with richer emollients such as caprylic/capric triglyceride to balance cushion and slip. In sun care formulas, pre-dispersing UV filters in Isononyl Isononanoate helps prevent crystallization and reduces whitening on the skin. For silicone-free claims, it can replace cyclomethicone at comparable use levels; we recommend a small-scale compatibility trial when reformulating.

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FAQ

Q: Is this Isononyl Isononanoate cosmetic grade?

A: Yes. The Isononyl Isononanoate supplied by IngreLink is cosmetic grade, complies with the INCI standard, and a COA is provided with each shipment.

Q: Can it replace silicones?

A: dry skin feel is similar to cyclomethicone, and it is commonly used in silicone-free formulations. It is also highly compatible with silicones and can act as a stabilizer in silicone-containing formulas.We also have solutions for volatility issues. Please feel free to contact us to discuss this further.

Q: Are samples available?

A: Yes. Please request a quote to obtain samples and technical documentation. SO,Don’t hesitate—get in touch with us!