Physcial properties of pigments

Assessing pigments requires consideration of both chemical and physical properties. No definitive conclusions can be drawn from solely focusing on either aspect. One of the key physical characteristics to consider is "particle size," which is measured in nanometers. Particle size is determined through a process called micronization. When formulating new pigments, manufacturers must balance various factors: particle size, compliance with regulations, opacity on the skin, and ease of implantation. Larger particles may implant more easily if their chemical structure closely aligns with the skin's internal environment. However, if the match is too close, this can lead to the risk of...