Posts Tagged ‘botox’
September 21st, 2022 by Dr. Hannah Sivak
DaxibotulinumtoxinA for Injection (DAXI) is a “novel” botulinum toxin type A, just approved by the FDA as an alternative to Botox. It seems that its effect lasts a bit longer, approximately 6 months to Botox 3 months. Let’s not get too excited: it’s not too different from Botox. It is injected the same way, in the same area (the corrugator/procerus muscles), and acts in the same way. The difference is what you could call a “technicality”: ts shelf life is extended by pairing it with a peptide, whose only function is the stabilization of the active protein, a botulinum toxin. A botulinum toxin by any other name is still botulinum…
July 29th, 2022 by Dr. Hannah Sivak
Yes, if we are talking about a hanky. Cotton, linen, hemp, and so on are predominantly made of cellulose, a polymer that consists of thousands of glucose molecules joined together to form linear chains. Each glucose subunit is “sticky” because it can bind to neighboring cellulose molecules via hydrogen bonds. Individually, these bonds are very weak, but together they form a network that gives the fabric its strength. These hydrogen bonds break and reform, so clothes start taking on the shape that they are left, and creases form. When we apply a hot, steaming iron, the combination of heat and moisture breaks the hydrogen bonds, and with the pressure applied…