Polypropylene (PP) and Polycarbonate (PC) are two widely used plastics with distinct properties. Polycarbonate is stronger than polypropylene in terms of impact resistance, tensile strength, and temperature tolerance. PC's exceptional toughness makes it suitable for applications requiring high durability, such as bulletproof windows and eyewear lenses. On the other hand, PP is known for its flexibility, chemical resistance, and fatigue resistance, making it ideal for containers, automotive parts, and living hinges. Though PP is lighter and more cost-effective, PC's superior strength and resilience to heat and impact make it the stronger material in demanding environments.

Titanium dioxide. with its high refractive index. is a popular addition in lipsticks for its vivid color. It also serves as a great UV blocker. providing an extra layer of protection. Its strong adherence to the skin prevents absorption and reduces the risk of damage. While there have been studies suggesting potential harm if inhaled as powder. this does not apply to its use in lipsticks. Generally. it is considered safe for use in cosmetics; however. if you prefer natural alternatives without this mineral. look for lipstick brands that do not include titanium dioxide.

Titanium dioxide. a popular choice for pigmentation in industries ranging from paint to cosmetics. typically requires the use of high-speed dissolvers and dispersers during the pre-mixing process. The first step is to add the carrier. which aids in stabilizing the pigment. Next. the titanium dioxide should be slowly added while continuously mixing to achieve thorough dispersion and prevent clumping. Mixing should continue until a smooth and consistent texture is achieved. As a safety precaution. please be aware that inhalation of titanium dioxide can have harmful effects on the lungs.