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含药化妆品常识油和水不相溶是一般的常识,但也有一些例外。例如牛奶就是典型的油水交融。原来在牛奶:中除了油脂和水外,还含有蛋白酪和磷脂等物质,它们既有亲水性、又有亲油性,当处于油水之间时,能降低油和水的表面张力。如果亲水性较强,就能将大油滴分解成许多细微的小油滴,水在油的球形周围形成一层薄膜,从而使小油滴不再凝聚,均匀地分布在水中,成为水包油型乳剂。反之,如果亲油性占优势,就可健水滴分布在油中,形成油包水型乳剂。这种能使油和水亲合的物质就是乳化剂。乳化剂的使用才有了油性或水性的化妆品类型,才使得药物成分能够很好地与化妆品相结合。
Common sense of medicated cosmetics Oil and water immiscibility is a common general knowledge, but there are some exceptions. For example, milk is a typical blend of oil and water. The original milk: in addition to grease and water, but also contains cheese and phospholipids and other substances, they are both hydrophilic, but also lipophilic, when in between oil and water, can reduce the oil and water surface tension. If the hydrophilicity is strong, the large oil droplets can be broken down into many fine small oil droplets. The water forms a thin film around the spherical shape of the oil, so that the small oil droplets no longer aggregate and are uniformly distributed in the water and become water Oil-in-water emulsion. Conversely, if the pro-lipophilic dominant, you can health water droplets distributed in the oil to form a water-in-oil emulsion. This kind of material that makes the oil and water compatible is the emulsifier. The use of emulsifiers only oily or water-based cosmetic type, which makes the drug ingredients can be well combined with the cosmetics.