A/EP 眉筆柔度測試探頭

A/EP 眉筆柔度測試探頭
此探頭可提供量化眉筆的硬度（Hardness）、描繪性(Descriptive) 及易斷性(Breakability) 等參數，也適用於眼線或唇線各種產品。測試結果可提供含臘配方等工藝技術的調整或者評估溫度變化條件下產品品質的穩定性。

The rigidity of an eye pencil core must allow the tip to be sharpened to a point to provide a ‘defined line’ application without scratching the eye of the user. The product developer must tackle the creation of a product which is not so soft to cause smudging around the eye or have the tendency to become crumbly or brittle after prolonged or low-temperature storage. The hardness or rigidity of the core is controlled by waxes in the formulation which can be adjusted to the desired melting point of the finished product.