Ester (Skincare)
Ester (Skincare) — a compound formed by combining an acid with an alcohol, widely used in skincare to create ingredients with tailored stability, texture, and skin compatibility. Esters can serve as emollients, active derivatives, or gentle delivery forms of otherwise unstable or irritating ingredients.
Key points
- Vitamin C esters like ascorbyl palmitate and tetrahexyldecyl ascorbate are more stable than pure ascorbic acid.
- Emollient esters such as isopropyl myristate give products a smooth, cushiony feel on the skin.
- Ester forms of actives may convert to the parent compound once absorbed into the skin.
- Esterification can reduce irritation potential while preserving some of an ingredient's benefits.
Frequently asked
Are vitamin C esters as effective as pure vitamin C?
Ester forms tend to be more stable and gentler but may deliver active vitamin C differently, and evidence on their potency compared with pure ascorbic acid varies by ingredient.
Why are esters used in moisturizers?
Emollient esters help soften skin and improve a product's texture and spreadability, giving formulas a silky, non-greasy finish.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
