Atactic polypropylene (aPP) is a type of polypropylene where the methyl groups are randomly arranged around the main polymer chain. Unlike its isotactic counterpart, where methyl groups are uniformly positioned, aPP has an amorphous structure, leading to a material that is soft and has a lower melting point. This randomness inhibits the polymer chains from packing closely together, resulting in a material that is less crystalline and thus less rigid at room temperature. Due to its properties, aPP is often used in applications requiring flexibility and impact resistance rather than strength and rigidity. It finds application in hot melt adhesives, sealants, and as a component in some impact copolymers. The specific characteristics of atactic polypropylene make it suitable for specialized uses where its unique blend of properties can be advantageously employed.

The U.S. Food and Drug Administration FDA considers titanium dioxide safe for use in food. cosmetics. and sunscreen products. Nonetheless. there are reservations about prolonged inhalation of high levels such as from occupational exposure. As per animal studies. the International Agency for Research on Cancer IARC classifies inhaling titanium dioxide as a potential human carcinogen. although the proof is limited. While small amounts may not pose a threat. continuous exposure through inhalation should be avoided. To ensure your well-being. always follow the recommended usage of this product.

Titanium dioxide is often used in personal care products such as shampoos and conditioners due to its ability to protect against UV radiation. It is generally considered safe for topical use. If you're using a product that contains titanium dioxide and you notice any adverse reactions, discontinue use and contact a healthcare professional. It's worth noting that everyone's body reacts differently, so what works for one person may not work for another. But as far as the general consensus goes, it's safe to have on your hair.