Comparison of Commercial Cosmetic Products Using NMR Relaxation Measurements
Formulators working in the cosmetics and personal care industries have numerous delivery vehicles from which to choose when formulating skin care products: emulsions, gels, sticks, mousses, aerosols, and ointments all have specific benefits. However, the emulsion is by far the most popular because it offers almost unlimited versatility in meeting the primary market objectives of efficacy, aesthetics, and cost parameters.
As we will explore in this Application Note, nuclear magnetic resonance (NMR) relaxation is a technique that is easy to employ, produces rapid results, and requires limited input data. Importantly, because it does not make any assumptions about the composition of the formulation and requires little, or no, sample preparation this makes it an ideal technique for measuring finished commercial products.
