You might not think about chemical ingredients every time you open a bottle of nail polish, but ingredients are the difference between chip-free nail polish and a ruined Sunday. Nail polish is essentially a suspension, meaning its ingredients are mixed but not chemically combined. That is why it separates.
The base usually starts with nitrocellulose, which provides the hard film. Manufacturers add resins and plasticizers to prevent the film from breaking when fingers are bent. Older formulas relied on nylon. Modern? It is a mixture of amyl and butyl stearate, castor oil, glycerin, fatty acids and acetic acid. There is no one universal formula. Each brand has its own special protective combination that ensures resistance to soap, water and everyday wear and tear.
Once a flexible foundation is created, color comes into the conversation. Early varnishes used soluble dyes. Currently, we use pigments suspended in solvents. Solvent is the MVP here because it has to evaporate quickly after application, leaving behind color and resin. To make the pigment fine enough to spread evenly, manufacturers run the mixture through a two-roll differential mill. This breaks up the particles and ensures that everything is evenly distributed. If the mill is not calibrated properly, streaks will appear. Or clumps.
Why You Should Shake and Store Polish Correctly
了解这些组件可以解释为什么polish会产生这样的效果。 它还为您提供了延长瓶子使用寿命的具体方法。
首先，摇晃。 由于polish是悬浮液，随着时间的推移，较重的颜料颗粒会沉淀在底部。 使用前摇动瓶子可使这些颗粒恢复到悬浮液中。 如果跳过此步骤，您将使用带有淡淡颜色的水性溶剂。
但对于旧瓶子来说，摇晃是不够的。 随着polish的老化，太多的颗粒会沉淀下来。 它们变得难以重构为溶剂。 瓶子变成了粘稠的、无法使用的污泥。 那就是你扔掉它的时候。
制冷改变了长寿的游戏规则。 将指甲油放在冰箱中可以减缓瓶子老化时的变色速度。 它还可以减少溶剂的蒸发，而溶剂的蒸发会导致polish变稠和结块。 冷藏可防止颜料结块。
不过，有一个问题。 您必须将瓶子直立存放。 如果将瓶子侧放，溶剂就会渗入瓶盖区域。 当你稍后尝试摇动它时，颜料不会那么容易重新混合在一起。 最终你会得到一个separated mess，无论进行多少手臂锻炼都无法解决。
健康连接
这种化学反应不仅仅与美学有关。 它直接关系到指甲的健康。 成分与指甲板相互作用的方式会影响指甲随着时间的推移保持的强度。 接下来我们将探讨这种联系，但现在请记住这一点：像对待化学混合物一样对待指甲油，而不仅仅是化妆品，可以节省金钱，并使您的美甲保持更长久的新鲜感。
