Esculin is a natural compound extracted from the bark of the Horse Chestnut tree (Aesculus hippocastanum) and other plants from the Hippocastanaceae family. This glucoside is widely used in the cosmetic and personal care industry for its antioxidant, anti-inflammatory, and skin-brightening properties.

Chemical Composition and Structure
Esculin is a coumarin glucoside with the chemical formula C15H16O9. It is composed of:

Coumarin: An organic compound with significant antioxidant and anti-inflammatory properties.
Glucose: A simple sugar that enhances the solubility and bioavailability of esculin.
Physical Properties
Esculin typically appears as a white to off-white crystalline powder. It is soluble in water and alcohol, making it suitable for various cosmetic formulations. Esculin has a mild, characteristic scent.

Cosmetic and Personal Care Applications
Antioxidant: Protects the skin from free radical damage and environmental stressors.

Anti-inflammatory: Reduces inflammation and soothes irritated skin.

Skin Brightening: Helps to lighten and even out skin tone, reducing the appearance of dark spots and hyperpigmentation.

Vasoprotective: Strengthens capillaries and improves microcirculation, beneficial for reducing puffiness and under-eye circles.

UV Protection: Provides some level of protection against UV radiation, though not a substitute for sunscreen.

Environmental and Safety Considerations

Esculin is generally considered safe for use in cosmetic and personal care products when used within recommended concentrations. It is biodegradable and environmentally friendly. Sustainable harvesting practices are essential to ensure the preservation of Horse Chestnut trees and their natural habitats.

Cosmetics - INCI Functions


Light stabilizer. It prevents light from degrading light-sensitive components and slows down degradation reactions that have already begun. The mechanism is, in a way, similar to antioxidants and the effectiveness depends on the.complexity of the formulation and the density of the product.

Surfactant - Foam booster. It has the effect of introducing gas bubbles into the water and affects the cleaning process by helping to spread the cleanser. Since sebum has an inhibiting effect on the bubble, more foam is produced in the second shampoo.
Synonyms:

CAS: 8053-39-2 EC number 232-497-7