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Polyoxymethylene (POM), also known as acetal, [4] polyacetal, and polyformaldehyde, is an engineering thermoplastic used in precision parts requiring high stiffness, low friction, and excellent dimensional stability. Short-chained POM (chain length between 8 and 100 repeating units) is also better known as paraformaldehyde (PFA).
May 4—PORTSMOUTH — Any cancer diagnosis can be devastating. Even the treatment can be hard. For many, one of the most emotional and difficult parts of receiving chemotherapy is the loss of hair.
Certain straightening products that contain formaldehyde could be banned in the U.S. following a 2022 study showing a link to uterine cancer. FDA considering banning hair products linked to cancer ...
Severe hair loss is reported from doxorubicin, the nitrosoureas, and cyclophosphamide. Other causes are bleomycin, dactinomycin, daunorubicin, systemic fluorouracil, and high-dose methotrexate. Other medicines such as colchicine and ciclosporin (ciclosporin more often causes increased hair growth)
Modacrylic fibers are modified acrylic fibers made from acrylonitriles, but larger amounts of other polymers are added to make the copolymers. The modacrylic fibers are produced by polymerizing the components, dissolving the copolymer in acetone , pumping the solution into the column of warm air (dry-spun), and stretching while hot.
A new study ties chemical hair straighteners to uterine cancer. Here's what you need to know, why Black women need to pay special attention and what doctors say. New Research Finds Possible Link ...
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Hair styling powder, often regarded as a modern innovation, can actually trace its origins back to the late 16th and early 17th century, powdered substances, such as starch or flour, were employed to enhance wigs and natural hair, [2] during the reign of Henry IV of France. [3]