Back to Ingredient Dictionary

Cornstarch

Description

Cornstarch, derived from the endosperm of corn kernels, is a versatile ingredient with applications in skincare and cosmetic formulations. This fine, white powder is composed primarily of amylose and amylopectin, two types of polysaccharides that contribute to its unique properties. In skincare, cornstarch functions as an absorbent, thickening agent, and mattifying ingredient.

Its ability to absorb excess oil and moisture makes it effective in reducing shine and controlling sebum production, particularly beneficial for individuals with oily or combination skin types. Cornstarch can also provide a smooth, silky texture to products, enhancing their sensory appeal and improving spreadability. As a natural alternative to talc, it is often used in body powders and dry shampoos.

In formulations, cornstarch acts as a stabilizer and can help improve the consistency of emulsions. It may also offer mild soothing properties, making it suitable for sensitive skin formulations. However, it's important to note that while generally considered safe, cornstarch can potentially clog pores in some individuals, so patch testing is advisable. When selecting cornstarch for skincare use, opt for pharmaceutical or cosmetic grade to ensure purity and minimize potential contaminants.