Dicaprylyl Ether

Overview

Dicaprylyl Ether is a symmetrical ether made from two C8 (caprylic) fatty alcohol chains. The ether bond gives it unusual properties for a plant-derived oil: it is extremely lightweight, spreads rapidly, and leaves an almost “evaporated” feel on skin — very close to what volatile silicones like cyclomethicone deliver. It does not actually evaporate, but it absorbs so quickly and completely that the sensation is remarkably similar.

It is a clear, colorless, odorless liquid with exceptionally low viscosity. Because it is derived from coconut or palm kernel fatty alcohols and contains no silicone chemistry, it fits neatly into “clean beauty” and silicone-free formulations.

Oxidative stability is excellent — the saturated ether bond resists rancidity far better than unsaturated plant oils. Shelf life is typically 24+ months when stored properly.

What it does in a formula

Dicaprylyl Ether transforms the oil phase of an emulsion from heavy to featherlight. Even a small amount (5-10%) noticeably reduces the greasy after-feel of richer oils. In anhydrous products, it acts as a fast-absorbing carrier that pulls other ingredients into skin rapidly.

Its spreading properties make it particularly valuable in mineral sunscreens and pigmented products. Zinc oxide, titanium dioxide, and iron oxides distribute more evenly when Dicaprylyl Ether is part of the oil blend, reducing white cast and streaking. It is also a good carrier for oil-soluble actives — it helps ingredients like retinol or vitamin E absorb more efficiently.

How to use

Add Dicaprylyl Ether to your oil phase at any temperature. It is heat-stable and chemically inert — it will not interact with emulsifiers, preservatives, or actives.

Typical usage rates:

• Lightweight facial moisturizers: 5-15% to cut greasiness
• Mineral sunscreens: 10-25% as primary spreading agent
• Silicone-free primers: 15-30% as the base fluid
• Body oils and dry-touch sprays: 20-30% for rapid absorption
• Hair serums (silicone-free): 10-25% for a weightless, glossy finish
• Color cosmetics (foundations, concealers): 10-20% for pigment dispersion

It mixes with all common cosmetic oils and esters. It is also miscible with silicones if your formula uses them.

Best for / Worst for

Best for: silicone-free formulations, mineral sunscreens, oily skin products, primers, dry-touch body oils, formulators replacing cyclomethicone or dimethicone, products that need excellent spreading without residue.

Worst for: formulations targeting very dry skin that needs lasting occlusion, rich night creams where a heavy feel is desired, products where long-lasting surface moisture is the goal (it absorbs too fast), formulators who need a true volatile carrier.

Common pitfalls

Assuming it evaporates. It absorbs into skin — it does not leave the surface the way cyclomethicone does. In applications where true volatility is needed (aerosol hair sprays, setting sprays), Dicaprylyl Ether is not a direct replacement.

Using too much in a rich cream. At 20%+ in a heavy butter-based formula, Dicaprylyl Ether can make the cream feel oddly thin and inconsistent. Balance it against your richer oils.

Neglecting it in sunscreen development. If you are formulating mineral sunscreens and struggling with white cast, this should be one of the first ingredients you try. Its spreading power over skin is genuinely useful.

Confusing it with Dicaprylyl Carbonate. Similar name, different molecule. Dicaprylyl Carbonate has a carbonate bond and a slightly different skin feel. They are in the same family of lightweight emollients but are not identical.

Substitutes

• Isoamyl Cocoate — lightweight coconut ester, slightly heavier feel, also a good silicone alternative.
• C12-15 Alkyl Benzoate — dry-touch ester, excellent pigment wetter, slightly more body.
• Isohexadecane — hydrocarbon emollient with similar spreading properties, but petroleum-derived.
• Undecane (and Tridecane) — plant-derived alkane blend, very volatile, closest non-silicone match to cyclomethicone’s evaporation behavior.