INCI: C12-15 Alkyl Benzoate - Also known as: Finsolv TN, Benzoic Acid C12-15 Alkyl Ester

QUICK FACTS

What is C12-15 Alkyl Benzoate?

C12-15 Alkyl Benzoate is a synthetic ester produced by reacting benzoic acid with a mixture of C12 to C15 fatty alcohols derived from plant-based sources. The result is a lightweight, dry-feel ester with excellent spreading properties and chemical stability - one of the more precisely engineered emollient esters in cosmetic formulation. Its distinctive skin feel differentiates it from natural plant oils: where most botanical oils leave a degree of richness or slip, C12-15 Alkyl Benzoate imparts a smooth, dry, almost powdery skin feel that significantly reduces the perception of heaviness or greasiness in complex formulas.

This dry-feel character makes it a useful formulation tool in products where high active concentrations might otherwise create a sticky or heavy application experience. In Sweet Chemistry's formulas - which carry 40-46% actives in the water-based products and 100% actives in the Oil-Serum - managing the application feel without adding greasiness or compromising active delivery is a genuine formulation challenge. C12-15 Alkyl Benzoate's contribution addresses this directly.

It is present in all four Sweet Chemistry formulas - the only ester with universal presence across the full Max Repair System - reflecting its relevance across every formula architecture from the aqueous Hydra-Serum to the waterless Oil-Serum.

What does it do for skin?

C12-15 Alkyl Benzoate's primary contribution to skin is through its emollient and texture-modifying character. As an emollient ester, it is associated with softening the skin's surface and contributing to a smooth, even skin feel after application - but through a distinctly lighter, non-greasy pathway than natural oils or heavier esters. Its low polarity and high spreadability allow it to distribute thinly and evenly across the skin's surface, leaving a smooth finish that facilitates even application of the formula's active payload without balling, pilling, or the tactile drag that can make high-active formulas difficult to apply consistently.

In oil-in-water emulsions like the Sweet Chemistry water-based formulas, C12-15 Alkyl Benzoate's contribution to the oil phase also supports emulsion aesthetics - helping the formula feel light and skin-like at the moment of application despite its active concentration. In the waterless Oil-Serum, it contributes to the spreadability of the anhydrous formula, helping to ensure that each application of the highly concentrated serum can be distributed thinly and evenly without requiring excessive product or effort.

Its chemical stability - it does not oxidize, does not react with sensitive actives, and maintains its clarity and performance across a wide temperature range - makes it a useful component in formulas where protecting the integrity of active ingredients is a priority. In a formula carrying THD ascorbate and Matrikynes® peptides, a stable, chemically inert emollient is preferable to one that could introduce reactive species or pro-oxidant byproducts.

FOUND IN

In All 4 Formulas

C12-15 Alkyl Benzoate is the only emollient ester with universal presence across the entire Sweet Chemistry Max Repair System - the lightweight, dry-feel counterpart to the heavier botanical oils and butters in each formula.

Nourishment - All Skin Types

Barrier Repairing Hydra-Serum C12-15 Alkyl Benzoate - 1.0 oz / 30 ml

In the Hydra-Serum, C12-15 Alkyl Benzoate contributes dry-feel spreadability to a 40%-active emulsion - helping the serum apply thinly and evenly across all skin types without greasiness.

Hydration - Dry to Normal

Elasticity Reinforcing Hydra-Cream C12-15 Alkyl Benzoate - 1.7 oz / 50 ml

In the Hydra-Cream, its dry-feel character supports the cushioned satin finish - helping a 40%-active formula feel skin-like rather than heavy despite its dense active payload.

Hydration - Dry to Dehydrated

Elasticity Reinforcing Lipid-Cream C12-15 Alkyl Benzoate - 1.7 oz / 50 ml

In the Lipid-Cream, C12-15 Alkyl Benzoate balances the emollient richness of shea butter and seed oils with its lightweight, dry-feel counterpoint - helping the formula retain its radiant finish without heaviness.

Nourishment - Dry to Combination

Barrier Repairing Oil-Serum C12-15 Alkyl Benzoate - 1.0 oz / 30 ml

In the Oil-Serum, C12-15 Alkyl Benzoate contributes spreading and spreadability support within the 100%-active, anhydrous formula - helping a highly concentrated serum apply with precision and evenness.

WORKS TOGETHER WITH

Skin-Identical Lipid Squalane

INCI: Squalane.

At 7% in the Oil-Serum and functional levels in both creams. Synergy Note: Squalane contributes the primary emollient carrier character in the Oil-Serum; C12-15 Alkyl Benzoate adds a lighter, dry-feel spreading dimension - their combined presence creates a more complete lipid-phase application experience that balances emollient richness with lightweight feel.

Botanical Seed Oils Rosehip + Jojoba + Sea Buckthorn + Raspberry

Multiple INCI names: Rosa Rubiginosa (Rosehip) Seed Oil, Simmondsia Chinensis (Jojoba) Seed Oil, Hippophae Rhamnoides (Sea Buckthorn) Seed Oil, Rubus Idaeus (Raspberry) Fruit Extract.

Present across the formula lineup as the primary botanical emollient oils. Synergy Note: The botanical oils provide the formula's essential fatty acid and natural lipid emollient depth; C12-15 Alkyl Benzoate's synthetic dry-feel ester counterbalances any heaviness from their natural lipid richness - a functional pairing of natural and synthetic emollient approaches. View Profile - /pages/ingredients/rosehip-seed-oil

ECM Peptide Complex Matrikynes® Bone Peptides

INCI: Hydrolyzed Cow Bone Extract.

At 3% in all four formulas. Synergy Note: C12-15 Alkyl Benzoate's chemical stability and inert character means it does not interact with or compromise the Matrikynes® peptide complex - it earns its place in the formula as a performance-supporting emollient that leaves sensitive actives undisturbed.