Kiehl's Since 1851 Ultra Pure High-Potency 5.0% Niacinamide Serum

Propanediol is a naturally derived ingredient commonly used in cosmetics as a solvent and humectant. As a solvent, it helps dissolve other ingredients, ensuring a uniform and stable formulation. Its humectant properties allow it to attract and retain moisture in the skin, contributing to hydration and a smoother texture. Formulators may add Propanediol to enhance the overall feel and performance of a product, as well as to improve the delivery of active ingredients within the formulation.

METHYL GLUCETH-20 is a synthetic humectant commonly used in cosmetic formulations to help retain moisture in the skin. It functions by attracting water molecules, thereby enhancing the hydration levels of the skin and providing a moisturising effect. Formulators may add METHYL GLUCETH-20 to products to improve skin feel and texture, ensuring that formulations deliver a more comfortable and supple application experience.

HYDROXYACETOPHENONE is a synthetic compound known for its antioxidant properties. In cosmetic formulations, it is primarily used to help protect the skin from oxidative stress caused by environmental factors, such as UV radiation and pollution. By neutralizing free radicals, it can contribute to the overall stability and longevity of products, preventing degradation and maintaining their efficacy over time. Formulators may add HYDROXYACETOPHENONE to enhance the protective qualities of their formulations, ensuring that they provide a more effective barrier against environmental damage.

Sodium Hyaluronate is the sodium salt of hyaluronic acid, a naturally occurring substance in the body known for its remarkable ability to retain moisture. As a humectant, it attracts and binds water to the skin, helping to maintain hydration and improve the skin's overall texture and appearance. Formulators often include Sodium Hyaluronate in cosmetic products to enhance moisture levels, promote a plump and youthful look, and provide a smooth application experience. Its lightweight nature allows for easy absorption, making it a popular choice in various skincare formulations.

Caprylyl Glycol is a multifunctional ingredient commonly used in cosmetics for its preservative and humectant properties. As a preservative, it helps to inhibit the growth of microorganisms, thereby extending the shelf life of cosmetic products. Its humectant function allows it to attract and retain moisture in the skin, contributing to hydration and a smoother appearance. Formulators may add Caprylyl Glycol to enhance product stability and improve the overall sensory experience of the formulation.

CARBOMER is a synthetic polymer commonly used in cosmetic formulations for its ability to stabilize emulsions, form gels, and control viscosity. It helps to create a desirable texture in products, making them easier to apply and enhancing their overall feel on the skin. Formulators may add CARBOMER to achieve specific consistencies and stability in creams, lotions, and gels, ensuring that the ingredients remain evenly distributed and effective throughout the product's shelf life.

Sodium Hydroxide is a highly alkaline compound commonly used in cosmetics primarily as a pH adjuster. It helps to modify the acidity or alkalinity of formulations, ensuring that products maintain a stable and effective pH level for skin compatibility. Formulators may add Sodium Hydroxide to enhance the performance of other ingredients, improve product stability, and ensure that the overall formulation meets the desired specifications for safety and efficacy.